Posted on November 24, 2019
Silky water images take a lot of flak for being overused and unnatural. Sure, long exposures that blur a rushing creek into a white stripe, or smooth crashing surf into to a gauzy haze, can be trite (no judgement—these effects can also be beautiful). But the argument that motion blur in a water image is always invalid because it’s not “natural” just doesn’t hold wat…, uhhh…, up to scrutiny.
Think about it—there really are only two ways to capture moving water in a still photo: you can freeze water in place, or blur it. And a water droplet suspended in midair is no more representative of the human experience of that scene than silky water. That’s because the world unfolds to us like a seamless movie of continuous instants, while a camera accumulates light throughout its exposure to conflate those instants into a single frame.
Your options for expressing motion in a still frame aren’t binary—either frozen or blurred—they’re a continuum of choices ranging from discrete airborne droplets to blur completely devoid of detail. The key to capturing flowing water in a still photograph is conveying a sense of motion—how you do it is your creative choice (and blurring water simply because you can, and it looks “cool,” maybe isn’t the best approach).
Not only does your choice for handling water’s motion determine the effect’s visual appeal, it also affects the image’s mood. I find stopped water action in an image to be more stimulating, and blurred water more soothing.
And all motion blurs aren’t alike. There’s a big difference between slight blur that expresses a wave’s movement while retaining its overall size and shape, and extreme blur that purees every detail into a homogenized soup. Whether your goal is to freeze in midair the airborne droplets of a waterfall, smooth wind-whipped chop in a mountain lake, or reveal flow patterns in waves washing over a rocky shore, the key to controlling your point on the water motion continuum is understanding the reciprocal relationship between ISO, f-stop, and shutter speed.
I usually start with a general idea of the amount of blur I want, and try to determine the shutter speed that will get me there. Unfortunately, there is no one-to-one relationship between shutter speed and blur because shutter speed isn’t the only variable. You also need to consider the speed of the water, its distance, your focal length, and whether it’s moving toward/away from you, or across your frame. So I start by guessing the shutter speed (the more you do it, the better you’ll get), then figuring out the ISO/f-stop combination that gets me there. And if I can’t do it with ISO and f-stop, I reach for my neutral density filter.
After my first click I evaluate my blur effect on my in my mirrorless view finder or on my LCD screen and adjust accordingly. I usually take a range of frames at a variety of shutter speeds to have more options later, when I’m viewing my images on my big screen. This is especially true with crashing surf—often I’ll take multiple frames at the same shutter speed because there’s so much variation from wave to wave.
Golden Sunrise, Puna Coast, Hawaii Big Island (September, 2019)
My flight to Hawaii departed on a Friday, and my new Sony a7RIV was scheduled to arrive Monday. But the arrival of a new camera is to a photographer what Christmas morning is to a 5-year-old (do you know any 5-year-olds who would delay Christmas by a week?)—so I had Sony ship the camera to my hotel in Hawaii. So far so good—until Hawaiian Airlines lost my suitcase. In addition to having no change of clothes or toiletry items, I was suddenly without a tripod. The clothing and toiletry essentials were handled with a trip to the Hilo Target, but a camera with no tripod? In my world that’s not much different than that 5-year-old unwrapping the remote-control helicopter he asked for and learning Santa didn’t think to include batteries. Fortunately, after lots of hand wringing and panicked pleas for help, the good folks at Breakthrough Filters overnighted one of their new carbon fiber tripods and I was whole again (Hawaiian got the bill for the $178 FedEx overnight charge as well).
Or so I thought. But using a tripod requires a way to mount the camera to the tripod, and my tripods require a camera-specific mount plate (for the photographers in the audience, that would be an Arca-Swiss-compatible L-Plate from Really Right Stuff). But the a7RIV was so new, RRS didn’t have its L-plate ready. Damn. Just about the time my internal 5-year-old was about to melt down in line at the grocery store, I figured that with a little creative engineering, my Sony a7RIII L-plate could (kind of) attach to my a7RIV—not an ideal arrangement, but enough to get by. I was in business.
A couple of days into the workshop I took the group out to one of my favorite Puna Coast spots for sunrise. As you can see from this picture, the Puna beaches aren’t great for swimming, but its rugged volcanic rock and black sand, along with very violent surf, make the photography here off the charts. I’ve photographed the California Coast from Big Sur to Mendocino, and the Oregon Coast from Bandon to Cannon Beach, but I like the Puna Coast south of Hilo just as much.
Every rock down here is lava. And being just down the mountain from Kilauea (one of the most active volcanoes in the world), all of the Puna lava is relatively new. In fact, the age of most of the Puna rock is measured in decades—during this workshop we did a Milky Way shoot on lava flows that were just one year old.
You’ll primarily find only two kinds of lava on Hawaii: aa and pahoehoe. Both are actually basalt, so the difference between aa and pahoehoe isn’t their composition, it the way the lava flows and cools. Rapidly flowing aa hardens into a jagged jumble, while slower flowing pahoehoe is a smoother, and often ropy, rock. (Pro Tip: I could never remember which lava type was which until I realized that “ah! ah!” is what I’d say if I were to walk barefoot on aa.) In this image, you can see both aa and pahoehoe: pahoehoe in the foreground and on the left (you can even see a little ropiness), and aa in the background on the right.
At any ocean scene, if you stand and watch the surf and rock interaction long enough, you become aware of patterns in the water’s flow. This scene in particular had some wonderful wave action that I very much wanted to convey. When we arrived it was so dark that motion blur impossible to avoid, but that changed as the sun approached the horizon (it always surprises me how quickly the light comes up at the lower latitudes).
By sunrise I’d become pretty familiar with the scene and knew I wanted to start my exposure as a wave large enough to sweep through the foreground was about to break, and that a shutter speed between 10 and 15 seconds would capture all of a single wave’s motion.
With the sun up, achieving a 10-15 second shutter speed is only possible with a neutral density filter. But there was a distracting sheen on the rocks that I wanted to minimize with a polarizer. In these situations in the past, I had to decide between an ND filter or a polarizer, or live with significant vignetting by stacking the two (or by using a Singh-Ray Vari-N-Duo filter). But my Breakthrough 6-stop Dark CPL works as a polarizer, but it also cuts 6 stops of light. And because it’s no thicker than a standard polarizer, it does this without vignetting. (As you can see, I didn’t get rid of all the sheen on the rocks, but I was definitely able to reduce it to a manageable level.)
Since I’m not a big fan of Sony’s wired remote (an understatement), since switching to Sony I’ve almost exclusively used the 2-second timer, making timing waves kind of a pain. But my new Sony Bluetooth Wireless Remote Commander made timing the waves a piece of cake. Though I shot a number of frames with this composition, the action of the water made each frame different. I chose this image because it was the best combination of sunrise light and wave motion.
After a couple of days on the lamb, my suitcase eventually turned up—but it waited until after I’d purchased an entirely new Hawaii wardrobe, plus all the other essentials. Since I always pack my suitcase to within a couple of ounces of the maximum weight allowed anyway, all this extra stuff, not to mention the addition of a new camera and tripod, created a bit of a weight problem. I was able to get back under airline’s weight limit by filling a USPS large flat-rate box with all of my heaviest (non-camera) stuff and mailing it home. And to Hawaiian Airline’s credit, they reimbursed every penny of my extra expenses without blinking.
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Posted on September 17, 2017
Aloha from Hawaii!
Let’s have a show of hands: Who feels like their photography has stagnated? Let me suggest to all with your hands up that what’s holding you back may be the very rules that helped elevate you to your current level of proficiency. I’ll be the first to acknowledge that rules are important, the glue of civilization. Bedtimes, homework, and curfews got us through childhood and taught us to self-police as adults. Now we get enough sleep (right?), meet deadlines at work, and toe the line well enough to have become productive members of society with very little supervision (give yourself a gold star). But let me suggest that many of us have become so conditioned to follow rules that we honor them simply because they’ve been labeled “rule.”
As important as this conditioning is to the preservation of society, our reluctance to question rules sometimes impacts areas of our lives that might not be so cut-and-dried. One example would be photographers’ blind adherence to the (usually) well-intended “experts” proliferating online, in print, and at the local camera club. These self-proclaimed authorities spew absolutes for their disciples to embrace: Expose to the right!; Never center your subject!; Tack-sharp front-to-back!; Blurred water is cliché! Blah, blah, blah…. (My standard advice to anyone seeking photographic guidance is to beware of absolutes, and when you hear one, beeline to the nearest exit because the truth is, there are very, very few absolutes in photography.)
Rules serve a beginning photographer the way training wheels serve a five-year-old on a bike: They’re great for getting started, but soon get in the way. At first, following expert guidance, beginners’ photography improves noticeably and it’s easy to attribute all this success to rules. But by the time the improvement slows or even ceases altogether, those rules have become so deeply ingrained that it’s difficult to realize they now hold us back. You wouldn’t do Tour de France with training wheels, or run the Boston Marathon on crutches.
If photography were entirely rule-bound, engineers could write algorithms and design robots that did our photography for us. But the very definition of creativity is venturing beyond the comfortable confines of our preconceptions to create something new. In other words, if you’re not breaking the rules, you’re not being creative.
For the last eight years I’ve spent one or two weeks on Hawaii’s Big Island. And on each trip I make multiple visits to the (fabulous) Hawaii Tropical Botanical Garden just north of Hilo. There’s so much to love here, but I’m always drawn to the bottom of the garden overlooking Onomea Bay, where the luxuriant jungle unfolds beneath an interlaced canopy of towering monkeypod trees (albizia saman). Every time I’m down here I try to find a composition that captures the lushness I feel in the saturated air, and the way the monkeypod’s branches seem etched against the sky. And each time I come away a little disappointed.
This year, armed with my new Sony 12-24 f/4 G lens, I decided to give the scene another shot beneath the late afternoon overcast. With a decent breeze stirring the leaves, I pushed my ISO to 800 to be safe. Widening my view to 12mm and pointing up, it soon became clear that the palm tree I needed to anchor my frame belonged in the middle. And even without metering I knew that the crazy dynamic range (the shaded side of every leaf juxtaposed against a bright sky) would force me to sacrifice the texture in the clouds in favor of the essential detail and color in the jungle’s dense shadows.
Both of these important considerations flew in the face of rules that have constrained photographers for years. For as long as we’ve held a camera, our inclination to bullseye every subject has been stifled by voices whispering the “rule” of thirds (horizon 1/3 up from the bottom or down from the top; primary subjects at the intersections of an imaginary tic-tac-toe grid on our frame) in our ear. And of course digital photographers everywhere know to never blow the highlights.
In this case, even though it would get me booted from many camera club photo competitions, I’ve been scoffing at the rule of thirds long enough that centering the palm tree wasn’t hard. But seeing nearly half my frame flashing highlight warnings was a little more difficult. Nevertheless, I held my breath and went ahead with the shot you see here. And it turns out, instead of creating a problem, the white (overexposed) sky becomes a feature that only enhances the rich green and etched branches.
Sit down and write out your strongest, longest held photography rules (trust me, they’re there). Challenge yourself to break at least one of these rules each time you go out with your camera. Don’t expect miracles—at first your resulting images might not thrill you, but I promise that you’ll grow as a photographer, and you just might learn something in the process. (Oh, and you can put your hands down now.)
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Posted on March 9, 2017
Previously on the Eloquent Nature blog: Photograph the Milky Way: Part One
Viewing the Milky Way requires nothing more than a clear, dark sky. The Milky Way’s luminosity is fixed, so our ability to see it is largely a function of the darkness of the surrounding sky—the darker the sky, the better the Milky Way stands out. But because our eyes can only take in a fixed amount of light, there’s a ceiling on our ability to view the Milky Way with the unaided eye.
A camera, on the other hand, can accumulate light for a virtually unlimited duration. This, combined with technological advances that continue increasing the light sensitivity of digital sensors, means that when it comes to photographing the Milky Way, well…, the sky’s the limit. As glorious as it is to view the Milky Way with the unaided eye, a camera will show you things your eyes can’t see. In fact, not only does the right camera in the right hands resolve far more Milky Way detail than we can see, it also reveals color too faint for the human eye.
Knowing when and where to view the Milky Way is a great start, but photographing the Milky Way requires a combination of equipment, skill, and experience that doesn’t just happen overnight (so to speak). But Milky Way photography doesn’t need to break the bank, and it’s not rocket science.
Bottom line, photographing the Milky Way is all about maximizing your ability to collect light: long exposures, fast lenses, high ISO.
In general, the larger your camera’s sensor and photosites (the “pixels” that capture the light), the more efficiently it collects light. Because other technology is involved, there’s not an absolute correlation between sensor and pixel size and light gathering capability, but a small, densely packed sensor almost certainly rules out your smartphone and point-and-shoot cameras anything more than a fuzzy snap of the Milky Way. At the very least you’ll want a mirrorless or DSLR camera with an APS-C (1.5/1.6 crop) size sensor. Better still is a full frame mirrorless or DSLR camera. (A 4/3 Olympus or Panasonic sensor might work, but I’ve not been overly impressed with the high ISO images I’ve seen from these smaller sensors.)
Another general rule is that the newer the technology, the better it will perform in low light. Even with their smaller, more densely packed sensors, many of today’s top APS-C bodies outperform in low light full frame bodies that have been out for a few years, so full frame or APS-C, if your camera is relatively new, it will probably do the job.
If you’re shopping for a new camera and think night photography might be in your future, compare your potential cameras’ high ISO capabilities—not their maximum ISO, but read some reviews to see how your camera candidates fare in objective tests by credible sources like DP Review or Imaging Resource (there are many others).
An often overlooked consideration is the camera’s ability to focus in extreme low light. Autofocusing on the stars or landscape will be difficult to impossible, and you’ll not be able to see well enough through a DSLR’s viewfinder to manually focus. Some bodies with a fast lens will autofocus on a bright star or planet, but it’s not something I’d count on (though I expect within a few years before this capability becomes more common).
Having photographed for years with Sony and Canon, and working extensively with most other mirrorless and DSLR bodies in my workshops, I have lots of experience with cameras from many manufacturers. In my book, focus peaking makes mirrorless the clear winner for night focusing. Sony’s current mirrorless bodies (a7R II, a7S, and a7S II) are by far the easiest I’ve ever used for focusing in the dark—what took a minute or more with my Canon, I can do in seconds using focus peaking with my Sony bodies. That said, of the major DSLR brands, I’ve found Canon’s superior LCD screen makes it much easier to focus in extreme low light than Nikon. (More on focus later.)
Put simply, to photograph the Milky Way you want fast, wide glass—the faster the better. Fast to capture as much light as possible; wide to take in lots of sky. A faster lens also makes focus and composition easier because its larger aperture gathers more light. How fast? F/2.8 or faster—preferably faster. How wide? At least 28mm, and 24mm or wider is better still. I do enough night photography that I have a dedicated, night-only lens—my original night lens was a Canon-mount Zeiss 28mm f/2; my current night lens is a Rokinon 24mm f/1.4.
It goes without saying that at exposure times up to 30 seconds, you’ll need a sturdy tripod and head for Milky Way photography. You don’t need to spend a fortune, but the more you spend, the happier you’ll be in the long run (trust me). Carbon fiber provides the best combination of strength, vibration reduction, and light weight, but a sturdy (heavy) aluminum tripod will do the job.
An extended centerpost is not terribly stable, and a non-extended centerpost limits your ability to spread the tripod’s legs and get low, so I avoid tripods with a centerpost. But if you have a sturdy tripod with a centerpost, don’t run out and purchase a new one—just don’t extend the centerpost when photographing at night.
Read my tips for purchasing a tripod here.
To eliminate the possibility of camera vibration I recommend a remote release; without a remote you’ll risk annoying all within earshot with your camera’s 2-second timer beep. Don’t forget a flashlight or headlamp for the walk to and from the car. And it’s never a bad idea to toss an extra battery in your pocket.
Keep it simple
There are just so many things that can go wrong on a moonless night when there’s not enough light to see camera controls, the contents of your bag, and the tripod leg you’re about to trip over. After doing this for many years, both on my own and helping others in workshops, I’ve decided that simplicity is essential.
Simplicity starts with paring down to the absolute minimum gear: a sturdy tripod, one body, one lens, and a remote release (plus an extra battery in my pocket). Everything else stays at home, in the car, or if I’m staying out after a sunset shoot, in my bag.
Upon arrival at my night photography destination, I extract my tripod, camera, lens (don’t forget to remove the polarizer), and remote release. I connect the remote and mount my lens—if it’s a zoom I set the focal length at the lens’s widest—then set my exposure and focus (more on exposure and focus below). If I’m walking to my photo site, I carry the pre-exposed and focused camera on the tripod (I know this makes some people uncomfortable, but if you don’t trust your head enough to hold onto your camera while you’re walking, it’s time for a new head), trying to keep the tripod as upright and stable as possible as I walk.
Flashlights/headlamps are essential for the walk/hike out to to and from my shooting location, but while I’m there and in shoot mode, it’s no flashlights, no exceptions. This is particularly important when I’m with a group. Not only does a flashlight inhibit your night vision, its light leaks into the frame of everyone who’s there. And while red lights may be better for your night vision, they’re particularly insidious about leaking into everyone’s frame (so before you ask, no red light!). If you follow my no flashlight rule, you’ll be amazed at how well your eyes adjust. I can operate my camera’s controls in the dark—it’s not hard with a little practice, and well worth the effort to learn. If I ever do need to see my camera to adjust something, or if I need to see to move around, my cell phone screen (not the phone’s flashlight, just its screen) gives me all the light I need.
A good Milky Way image is distinguished from an ordinary Milky Way image by its foreground. Simply finding a location that’s dark enough to see the Milky Way is difficult enough; finding a dark location that also has a foreground worthy of pairing with the Milky Way usually takes a little planning.
Since the Milky Way’s center is in the southern sky (for Northern Hemisphere observers), I look for remote (away from light pollution) subjects that I can photograph while facing south. Keep in mind that unless you have a ridiculous light gathering camera (like the Sony a7S or a7S II) and an extremely fast lens (f/2 or faster), your foreground will probably be more dark shape than detail. Water’s inherent reflectivity makes it a good foreground subject as well, especially if the water includes rocks or other features to add a little visual weight.
When I encounter a scene I deem photo worthy, not only do I try to determine its best light and moon rise/set possibilities, I also consider its potential as a Milky Way subject. Can I align it with the southern sky? Are there strong subjects that stand out against the sky? Is there any water I can include in my frame?
I’ve found views of the Grand Canyon from the North Rim, the Kilauea Caldera, and the bristlecone pines in California’s White Mountains that work spectacularly. On the other hand, while Yosemite Valley has lots to love, you don’t see a lot of Milky Way images from Yosemite Valley because there just aren’t that many south views there, and Yosemite’s towering, east/west trending granite walls give its south views an extremely high horizon that blocks much of the galactic core from the valley floor.
To maximize the amount of Milky Way in my frame, I generally (but not always) start with a vertical orientation that’s at least 2/3 sky. On the other hand, I do make sure to give myself more options with a few horizontal compositions as well. Given the near total darkness required of a Milky Way shoot, it’s often too dark to see well enough to compose that scene. If I can’t see well enough to compose I guess at a composition, take a short test exposure at an extreme (unusable) ISO to enable a relatively fast shutter speed (a few seconds), adjust the composition based on the image in the LCD, and repeat until I’m satisfied.
Needless to say, when it’s dark enough to view the Milky Way, there’s not enough light to autofocus (unless you have a rare camera/lens combo that can autofocus on a bright star and planet), or even to manually focus with confidence. And of all the things that can ruin a Milky Way image (not to mention an entire night), poor focus is number one. Not only is achieving focus difficult, it’s very easy to think you’re focused only to discover later that you just missed.
Because the Milky Way’s focus point is infinity, and you almost certainly won’t have enough light to stop down for more depth of field, your closest foreground subjects should be far enough away to be sharp when you’re wide open and focused at infinity. Before going out to shoot, find a hyperfocal app and plug in the values for your camera and lens at its widest aperture. Even though it’s technically possible to be sharp from half the hyperfocal distance to infinity, the kind of precise focus this requires is difficult to impossible in the dark, so my rule of thumb is to make sure my closest subject is no closer than the hyperfocal distance.
For example, I know with my Rokinon 24mm f/1.4 wide open on my full frame Sony a7S II, the hyperfocal distance is about 50 feet. If I have a subject that’s closer (such as a bristlecone pine), I’ll pre-focus (before dark) on the hyperfocal distance, or shine a bright light on an object at the hyperfocal distance and focus there, but generally I make sure everything is at least 50 feet away. Read more about hyperfocal focus in my Depth of Field article.
By far the number one cause of night focus misses is the idea that you can just dial any lens to infinity; followed closely by the idea that focused at one focal length means focused at all focal lengths. Because when it comes to sharpness, almost isn’t good enough, if you have a zoom lens, don’t even think of trying to dial the focus ring to the end for infinity. And even for most prime lenses, the infinity point is a little short of all the way to the end, and can vary slightly with the temperature and f-stop. If you know your lens well enough to be certain of its infinity point by feel (and are a risk taker), go for it. And that zoom lens that claims to be parfocal? While it’s possible that your zoom will hold focus throughout its entire focal range, regardless of what the manufacturer claims, I wouldn’t bet an entire shoot on it without testing first.
All this means that the only way to ensure night photography sharpness is to focus carefully on something before shooting, refocus every time your focal length changes, and check focus frequently by displaying and magnifying an image on your LCD. To simplify (there’s that word again), when using a zoom lens, I usually set the lens at its widest focal length, focus, verify, then never change the focal length again once I know I’m focused. And remember, the best way to ensure focus is to set your focal length and focus before it gets dark.
But sometimes pre-focusing isn’t possible, or for some reason you need to refocus after darkness falls. If I arrive at my destination in the dark, I autofocus on my headlights, a bright flashlight, or a laser 50 feet or more away. And again, never assume you’re sharp—always magnify your image and check it after you focus.
For more on focusing in the dark, including how to use stars to focus, read my Starlight Photo Tips article.
Exposing a Milky Way image is wonderfully simple once you realize that you don’t have to meter because you can’t (not enough light)—your goal is simply to capture as many photons as you can without damaging the image with noise, star motion, and lens flaws.
Basically, you can’t give a Milky Way image too much light. What I mean by that is, capturing the amount of light required to overexpose a Milky Way image is only possible if you’ve chosen an ISO and/or shutter speed that significantly compromises the quality of the image with excessive noise and/or star motion.
In a perfect world, I’d take every image at ISO 100 and f/8—the best ISO and f-stop for my camera and lens. But that’s not possible when photographing in near total darkness—a usable Milky Way image requires exposure compromises. What kind of compromises? Each exposure variable causes a different problem when pushed too far:
Again: My approach to metering for the Milky Way is to give my scene as much light as I can without pushing the exposure compromises to a point I can’t live with. Where exactly is that point? Not only is that a subjective question that varies with each camera body, lens, and scene, as technology improves, I’m less forgiving of exposure compromises than I once was. For example, when I started photographing the Milky Way with my Canon 1DS Mark III, the Milky Way scenes I could shoot were limited because my fastest wide lens was f/4 and I got too much noise when I pushed my ISO beyond 1600. This forced me compromise by shooting wide open with a 30-second shutter speed to achieve even marginal results. In fact, given these limitations, despite trying to photograph the Milky Way from many locations, the only foreground that worked well enough was Kilauea Caldera, because it was its own light source.
Today (early 2017) I photograph the Milky Way with a Sony a7S II and a Rokinon 24mm f/1.4 lens. I get cleaner images from my Sony at ISO 6400 than got a ISO 1600 on my Canon 1DSIII, and the light gathering capability of an f/1.4 lens revelatory. Now I can stop down slightly to reduce lens aberrations, drop my shutter speed to 20 or 15 seconds to cut star motion 33-50 percent, and still get usable foreground detail by starlight.
I can’t emphasize enough how important it is to know your camera’s and lens’s capabilities in low light, and how for you’re comfortable pushing them. For each of the night photography equipment combos I’ve used, I’ve established a general exposure upper threshold, rule-of-thumb compromise points for each exposure setting that I won’t exceed until I’ve reached the compromise threshold of the other exposure settings. For example, with my a7SII/Rokinon combo, I usually start at ISO 3200, f/2, 20 seconds. Those settings will usually get me enough light for Milky Way color and a little foreground detail. But if I want more light (for example, if I’m shooting into the black pit of the Grand Canyon from the North Rim), my first exposure compromise is to increase to ISO 6400; if I decide I need even more light, my next compromise is to open up to f/1.4; if that still isn’t enough light, my next compromise is to bump my shutter speed to 30 seconds. Finally, if I want more light that ISO 6400, f/1.4, 30 seconds delivers, I’ll try ISO 12,800 (and cross my fingers)*. If that’s not enough, I go home (or just sit and enjoy the view).
These thresholds are guidelines rather than hard-and-fast rules, and they apply to my setup only—your results may vary. And even though I’m pretty secure with this workflow, for every Milky Way composition I try a variety of exposure combinations before moving to another composition. Not only does this give me a range of options to choose between when I’m at home and reviewing my images on a big monitor, it also gives me more insight into my camera/lens capabilities, allowing me to refine my exposure compromise threshold points.
It’s time to click that shutter
You’re in position with the right gear, composed, focused, and exposure values set. Before you actually click the shutter, let me remind you of a couple of things you can do to ensure the best results: First, lower that center post. A tripod center post’s inherent instability is magnified during long exposures, not just by wind, but even by nearby footsteps, the press of the shutter button, and slap of the mirror (and sometimes it seems, by ghosts). And speaking of shutter clicks, you should be using a remote cable or two-second timer to eliminate the vibration imparted when your finger presses the shutter button.
When that first Milky Way image pops up on the LCD, it’s pretty exciting. So exciting in fact that sometimes you risk being lulled into a “Wow, this isn’t as hard as I expected” complacency. Even though you think everything’s perfect, don’t forget to review your image sharpness every few frames by displaying and magnifying and image on your LCD. In theory nothing should change unless you changed it, but in practice I’ve noticed a distinct inclination for focus to shift mysteriously between shots. Whether it’s slight temperature changes or an inadvertent nudge of the focus ring as you fumble with controls in the dark, you can file periodically checking your sharpness falls under “an ounce of prevention….” Believe me, this will save a lot of angst later.
And finally, don’t forget to play with different exposure settings for each composition. Not only does this give you more options, it also gives you more insight into your camera/lens combo’s low light capabilities.
The bottom line
Though having top-of-the-line low-light equipment helps a lot, it’s not essential. If you have a full frame DSLR that’s less than five years old, and a lens that’s f/2.8 or faster, you probably have all the equipment you need to get great the Milky Way images. Even with a cropped sensor, or an f/4 lens, you have a good chance of getting usable Milky Way images. If you’ve never done it before, don’t expect perfection the first time out. What you can expect is improvement each time you go out as you learn the limitations of your equipment and identify your own exposure compromise thresholds. And success or failure, at the very least you’ll have spent a magnificent night under the stars.
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Posted on October 28, 2016
It’s a rare photo trip that doesn’t include a moment to savor, a special confluence of location and light that seems to virtually assure great images. But every year or two I get to witness something that transcends photography, a moment that will be forever etched in my brain, camera or not. These moments are special not simply for their visual gifts, but also for the emotional connection to nature they foster.
I’ve written about some of these experiences here:
Last month I added a new transcendent moment to my list, this time on the summit of Kilauea on Hawaii’s Big Island. While spending the prior week dodging raindrops on Maui, I started hearing rumblings of extreme activity in Kilauea’s Halemaumau Crater. Though this eruption has been going since 1983, it’s usually not directly visible from the caldera’s rim (which is as close the public is allowed)—from here the only sign of crater’s churning lava lake is the rising plume of gas and steam, and the red glow that colors the sky after the sun goes down. But according to reports, the lake had risen high enough to be viewed directly from the rim, and there were even rumors of lava fountains.
On the evening before the workshop I visited Kilauea’s Jaggar Museum vista to see what all the excitement was about (though it’s about a mile from the crater, this is the closest and best view). The lake was indeed high enough to see from the rim (a personal first!), but all I could see was a mostly static black crust of cooling basalt lava. Several times a submerged wave opened a crack in the crust, creating a thin, barely visible window to the orange liquid below. It was cool to witness, but not anything particularly dramatic.
Two days later I guided my workshop group to Kilauea. Everyone was most excited about the chance to photograph the caldera beneath the Milky Way, but before the Milky Way the plan was to kill time with a trip the Visitor Center, a walk through the Thurston Lava Tube, sunset at the Jaggar vista, and a nice dinner. Everything went as planned until we reached Jaggar.
We pulled into the parking lot without high expectations, and as the group gathered their equipment, I jogged over to the caldera. To my complete shock (and awe), since my last visit, subterranean forces had whipped the previously placid lava lake into a roiling frenzy. Even from a mile away the volcano’s power was on plain display. Undulating jigsaw cracks zigzagged across the entire lake surface, but the main activity was focused on one region that every few seconds sent a new fountain of lava exploding skyward, splattering the lake surface and nearby wall with molten droplets. I turned and raced back to hurry the group.
Everyone quickly spread out along the wall and started shooting. After making checking on everyone I could find, I went to work with my Sony a6300 and Tamron 150-600. It was still daylight when we started, but dark by the time we had to leave for dinner. At some point during the festivities I remember uttering (and probably multiple times) to all within earshot that this was one of the highlights of my life. That night’s Milky Way shoot was lost to clouds, but no one felt cheated (and we finally got it a couple of nights later).
We returned to the caldera the next night, ostensibly to try again for the Milky Way, not daring to hope for a volcanic reprise. Again the clouds obscured the stars, but to our amazement, we found the lake as at least as agitated as the first night and everyone got a chance to correct whatever mistakes they’d made the previous night. For example, I decided I didn’t need the extra reach of the a6300’s 1.5 crop sensor and switch to my Sony a7RII. I also made a point of taking time to savor the experience a little more. The image I share here is from that second shoot.
The third night the caldera’s activity had calmed, but we finally got the Milky Way. I’ve loved the night sky since I was a kid, and will never tire of photographing the Milky Way above Kilauea. But I’m equally fascinated by the tectonic forces that mold our planet (enough to major in geology for several semesters), and will be forever grateful for (and humbled by) this experience on Kilauea and the opportunity to witness the process firsthand.
Posted on October 10, 2016
The morning (last week) I started this post I was photographing South Tufa at Mono Lake in 26 degree temperatures. It’s hard to believe that less than three weeks earlier I was wearing a tank top, shorts, and flip-flops while photographing orchids in Hawaii. And later today I’m off to Moab, Utah.
I’d taken my Hawaii workshop group to Lava Tree State Park, long a personal favorite spot for its quiet beauty and intimate scenes. A recent heavy downpour had soaked the ground and left virtually every square inch of foliage glistening with raindrops. Recognizing an opportunity for some extreme close-focus photography, I immediately loaded my macro and extension tubes into my bag and herded my group onto the loop trail that circumnavigates the park.
In the shade just off the trail at the back of the park, a solitary, raindrop-laden orchid caught my eye—exactly what I look for when close-focus photography is my goal. Unfortunately, even with my tripod extended to its maximum height (6 inches above my head), the flower was a few inches too high to photograph at what I considered a good angle. No matter how I tried, I couldn’t find a position that allowed me to emphasize the orchid and its raindrops without blowing out the brilliant sky in the background. Tugging at the back of my brain as I stalked my subject was that frequently uttered photographic mantra, “Never blow the highlights.” But rather than give up, I stood back and considered my options.
Photographic rules are usually based on sound, proven reasoning that guides the neophyte to competent, appealing images. And while I’ll acknowledge that a broken photographic rule can indeed ruin an image, I’ve also spent my entire photographic career espousing the creative merits of breaking rules. If true artistic achievement means doing something new, and there’s already a rule for something, doesn’t that mean it’s been done? In other words, genuine creativity requires breaking the very rules that are supposed to lead to good images.
So what was my problem? Among the most ubiquitous and absolute pieces of photograph dogma is, “Never blow your highlights!” And for the most part I agree that blown highlights ruin an image—in fact I’ve spent a lot of time writing about how to deal with difficult light, and it’s all been based on the premise that we need to save the highlights at all costs. Over the years I’ve written and spoken about exposure techniques, graduated neutral density filters, HDR blending, and silhouettes to save the highlights.
In this case, after exhausting my conventional solutions, it would have been far easier to move on to a different orchid. But I liked this orchid, with its rich color and shimmering raindrops, and the more time I spent with it, the more I liked it. So what if I make it okay to blow the highlights? What if instead of trying to subdue them, I made the highlights a feature of my scene?
Suddenly unshackled, an entirely new world of possibilities opened for me. I eyed the background and realized that turning the bright sky white, I’d have a striking contrast for the properly exposed orchid. Furthermore, the sky breaking through the canopy overhead would be softened by a paper-thin depth of field—if I could find the right aperture, the effect could be quite appealing.
To focus as close as possible, I added a 15mm extension tube to my macro and worked on identifying the angle of view and front/back relationships, eventually refining my the composition in small increments until all felt right. To mitigate a very slight breeze, I set my ISO to 800 and metered on the flower, ignoring the violently flashing highlights. The final piece of the puzzle was determining the f/stop that would give me the best effect. Rather than trust the result on my LCD, I ran the range of f/stops from f/2.8 to f/16, increasing my shutter speed to keep the exposure uniform. Regardless of the f/stop, with my lens more or less parallel to the orchid’s stem, I had a fairly large area of sharpness that included all of the raindrops, most the flower, and much of the stem.
I know this scene won’t garner as much attention as a vivid sunrise or dramatic lightning strike, but really like this image. So I guess the moral here is if you find yourself bound by rules, aggressively seek the unconventional. If a “rule” applies, go ahead and follow the rule for a shot or two, then challenge yourself to break it. You may end up with more failures than successes (but of course nobody needs to know that), but I’ll bet your successes will turn out to be among your favorite images.
(Creative use of the camera’s “limited” dynamic range)
Posted on November 18, 2015
Last week I said goodbye to my Sony a7S. More than any camera I’ve owned, this is the camera that overcame photography’s physical boundaries that most frustrated me.
I’ve been interested in astronomy since I was ten, ten years longer than I’ve a been photographer. But until recently I’ve been thwarted in my attempts to fully convey the majesty of the night sky above a grand landscape.
What was missing was light. Or more accurately, the camera’s ability to capture light. Light is what enables cameras to “see,” and while there’s still a little light after the sun goes down, cameras struggle mightily to find a usable amount.
When faced with limited light, photographers’ solutions are limited, and each solution is a compromise. In no particular order, we can increase:
Most night photography attempts bump into the limits of each solution before complete success is achieved. For me, the first barrier is usually the f-stop, which is soon maxed. With my f-stop maxed, I’m left with a dance between ISO and shutter speed as I attempt to balance acceptable amounts of motion and noise.
So why not just add more light? Duh. But, while adding light solves some problems, it introduces others. Anything bright enough to illuminate a large landscape (sunlight or moonlight) washes out the stars, and artificial local light (such as light painting or a flash) violates my own natural-light-only objective. Another option some resort to is image blending (one frame for the foreground, one for the sky), but that too violates my personal single-frame-only goal.
My first shot at the night photography conundrum came about ten years ago, when I started doing moonlight photography. I immediately found that the reflected sunlight cast by a full moon beautifully illuminated my landscapes, while preserving enough celestial darkness that the brighter, most recognizable constellations still shined through. But walking outside on a clear, moonless night far from city lights was all the reminder I needed that my favorite qualities of the night sky—the Milky Way and the the seemingly infinite quantity of stars—remained beyond my photographic reach.
To photograph a moonless sky brimming with stars, my next step was star trail photography—long exposures that accumulated enough light to reveal my terrestrial subjects at manageable ISO (not too much noise). Star trails have the added benefit of stretching stellar pinpoints into concentric arcs of light that beautifully depict Earth’s rotation.
While both enjoyable and beautiful, moonlight and star trail photography were not completely satisfying. But the laws of physics dictated that lenses weren’t going to get any faster, and Earth wasn’t going to rotate any slower, so the solution would need to be in sensor efficiency.
Unfortunately, camera manufactures remained resolute in their belief that megapixels sold cameras. So as sensor technology evolved, and photographers saw slow but steady high ISO improvement, we were force-fed a mind-boggling increase in megapixel count.
But cramming more megapixels onto a 35mm sensor requires: 1) smaller photosites that are less efficient at capturing light, and 2) more tightly packed photosites that increase (noise inducing) heat.
The megapixel race changed overnight when Sony, in a risky, game-changing move, decided to offer a high-end, full-frame camera with “only” a 12 megapixel sensor. What were they thinking!?
Acknowledging what serious photographers have known for years, that 12 megapixels is enough for most uses (just 12 years ago, pros paid $8,000 for a Canon 1Ds with only 11 megapixels), Sony bucked the megapixel trend to embrace the benefits of fewer, larger, less densely packed photosites. The result was a light-sucking monster that can see in the dark: the Sony a7S.
Since purchasing my a7S less than a year ago, I’m able to photograph the dark night sky above the landscapes I love. Additionally, I found that its fast shutter lag (since matched by the a7R II) made the a7S ideal for lightning photography. It was love at first click.
And now it’s gone. Last month Sony released the a7S II, and given my satisfaction with the upgrade from the a7R to the a7R II, it was only a matter of time before I upgraded to the a7S II. I’m happy to say that I found a good home for my a7S and in fact may even get to visit it in future workshops.
I haven’t had a chance to use the a7S II, but I assure you it won’t be long, and you’ll be the first to know.
About this image
The image at the top of this post was captured in September (2015) during my Hawaii Big Island Volcanos and Waterfalls photo workshop. Each time I visit here I hold my breath until I see what the sky is doing. I’ve encountered everything from completely cloudless to pea soup fog. I’ve come to hope for a mix of clouds and sky—enough sky for the Milky Way to shine through clearly, but enough clouds to reflect the orange light of the churning volcano.
On this evening we got a combination I hadn’t seen before—clear sky overhead, a few low clouds, and a heavy mist hanging in the caldera. Not only did the mist frame the scene with a translucent orange glow, it subdued the volcano’s fire enough for me to use a long exposure to bring out the Milky Way without blowing my highlights.
We’ll do it again in my next Hawaii Volcanos and Waterfalls workshop
Click an image for a closer look, and a slide show. Refresh the screen to reorder the display.
Posted on August 2, 2015
Visual “Truth” is relative
Without getting too philosophical, it’s important to understand that, like your camera, your view of the universe is both limited and interpreted. In other words, there is no absolute visual truth. Instead, we (you, me, our cameras) each have a unique vision of the world that’s based on the way we receive it. Our definition of “real” is biased toward the three-dimensional, 360 degree, continuous-motion way our eye/brain system processes our universe, but it’s wrong to contend that the camera’s perspective is any less real than yours or mine.
The visible spectrum
Before lamenting your camera’s limitations, pause to consider that, in the grand scheme of perpetual electromagnetic energy surrounding us, what you and I see is incredibly limited as well. The visible (to the human eye) portion of the electromagnetic spectrum is an insignificant fraction of the infinite continuum of electromagnetic wavelengths permeating the Universe. For example, X-ray machines peer into the world of electromagnetic waves in the one nanometer (one billionth of a meter); TVs and radios “see” waves that are measured in centimeters; humans, on the other hand, see only waves in the very narrow band between (about) 400 and 750 nanometers.
With tools that target specific wavelengths, doctors reveal subcutaneous secrets, astronomers explore our galaxy and beyond, law enforcement and the military use “invisible” (to us) infrared radiation (heat) to see people and objects in complete darkness. In other words, in the grand scheme of things, there’s no single absolute visual standard—it’s all relative to your frame of reference.
The camera has its own frame of reference. While it’s sensitive to more or less the same visible spectrum our eyes see, the camera is oblivious to an entire dimension (depth). Not only that (since we’re not talking about movies here), a camera only returns a snap of a single instant. But a camera has advantages—its narrow perspective (compared to the human experience) allows photographers to hide distractions outside the frame, and that “instant” reflected in a photo can actually be an accumulation of infinite number of instants.
Despite these differences, photographers often go to great lengths attempting to force their cameras to record the world the way their eyes see it—not necessarily bad, but extremely limiting. Not only is duplicating human vision with a camera impossible, doing so sacrifices the camera’s ability to reveal things the eye/brain misses.
Every photograph must be processed (interpreted) in some way before it can be viewed. The processing can happen in a lab (remember those days?), the camera, and/or in a computer. But human visual input is also interpreted before we perceive it. Visual processing happens in the brain, which adjusts for things like color temperature, perspective, motion, and so on.
Of course human vision is a lot more complex than that, and while the eye/brain relationship might not be a perfect analog for the camera/computer paradigm, suffice to say, whether you’re looking at Yosemite in a digital print, on a computer screen, or through your own two eyes, the scene has been interpreted. And with interpretation comes bias.
In many ways, the eye’s ability to capture light exceeds that of even the best cameras, effortlessly pulling detail out of deep shadows and bright highlights. But savvy photographers know how to use their cameras’ limited dynamic range to hide distractions, emphasize the scene’s most important elements, and reveal washed out color.
In the image above, captured on the Big Island of Hawaii last September, I used my camera’s (relatively) narrow dynamic range to simplify a sunrise to its essential color and shape. I could have blended multiple exposures to bring the detail in this scene closer to what my eyes saw, but it wasn’t the scene’s detail that moved me. Instead, underexposing the shadows minimized detail in the trees and rocks and allowed me to reveal color that had been washed out by the rising sun. I was able to simplify an originally complex scene to the elements that I found most compelling: the very tropical outline of swaying palms, the
tenacious strength of rugged sea stacks, and the vivid color of a Hawaii sunrise, all mirrored in an abstract foreground reflection.
Instead, using my camera’s “limited” dynamic range, I blackened the superfluous detail that would have distracted from the qualities of the scene that I most wanted to convey.
In the poppy image on the right, the scene’s dynamic range was again impossible to capture with a camera—everything you see as white was blue sky or brilliant sunlight to my eyes. I chose to properly expose the poppy and let the sky blow out. The result was this beautifully backlit poppy isolated against a white background that was nothing like my view of the scene—but it was exactly what my camera saw.
Open your mind
So the next time you feel like labeling “real” or “not real,” or insisting that your camera do things it’s not very good at (just to satisfy your own perception of reality), remember that real is relative and far broader than your narrow perspective.
(Or saw far differently)
Click an image for a closer look, and a slide show. Refresh the screen to reorder the display.