Posted on September 9, 2018
One of the questions I get the most about the New Zealand workshop Don Smith and I do is, “Why winter?” The simple answer is that it’s the best time to photograph there. This answer is usually followed with, “But isn’t it cold?” Not really—it’s more like a Northern California or Oregon winter, with highs in the 40s and 50s, and lows in the 20s and 30s. Also like Northern California and Oregon, New Zealand’s South Island gets some rain and fog in the lowlands, and snow in the mountains—so much better for photography than the persistent blue skies of the California summer I left behind.
While the conditions are certainly tolerable, and winter storms whiten the many peaks and fill the skies with interesting clouds, when pressed for more specifics on my preference for a New Zealand winter, it’s usually not long before I get to the night sky. With clean air and minimal light pollution, New Zealand is an astrophotographer’s paradise any season. But winter is when the Milky Way’s brilliant center shines prominently all night, rising much higher above the horizon than my Northern Hemisphere eyes are accustomed to.
One night in Wanaka Don and I took the group for short drive out to a vista overlooking Lake Hawea, one of many large glacial lakes decorating the South Island. I knew we’d get the Milky Way, but had forgotten about Mars, near opposition and shining brighter than it has in 15 years. We found it rising across the lake, so bright that it cast a sparkling reflection on the water. I started with vertical compositions, but soon switched to horizontal to include both Mars and the snow-capped peaks rising above the north shore.
Here are a couple of links to help with your night photography:
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Posted on May 27, 2018
Nothing in my life delivers a more potent dose of perspective than viewing the world from the bottom of the Grand Canyon. Days are spent at the mercy of the Colorado River, alternately drifting and hurtling beneath mile-high rock layers that tell more than a billion years of Earth story. And when the sun goes down, the ceiling becomes a cosmological light show, each pinpoint representing a different instant in our galaxy’s past.
More than any of my five trips through the Grand Canyon, I’ll remember this year’s for its night skies. The wall-to-wall blue that dogged our daylight photography darkened to just what the night-photography doctor ordered, and we took full advantage. Excited about the potential for stars, each day I powwowed with our lead guide, the amazing Lindsay, to identify potential campsites with the best views of the night sky in general, and the best views of our Milky Way’s brilliant galactic core in particular.
But targeting a Milky Way campsite is easier in theory than execution. In the Northern Hemisphere, even when the galactic core reaches its highest point, it’s still fairly low in the southern sky. So given the Grand Canyon’s general east/west orientation, the best Milky Way views are usually blocked by the canyon’s towering walls. Even identifying a potential campsite on a north/south oriented stretch of the river doesn’t ensure success because Colorado River campsites in the Grand Canyon are first-come, first-served. So even though the other groups on the river don’t usually think strategically about photographing the night sky like I do, each campsite has its own appealing qualities and there’s never a guarantee that any given one will be free when we get there.
In general, my raft trips’ first night or (maybe) two usually provide our best Milky Way opportunities because the first 75 miles of the Colorado River downstream from our put-in at Lee’s Ferry runs pretty much north/south. With the river running north/south, the canyon walls are to the east and west and we usually get a pretty clear view of the north and south horizons. Just downstream from the confluence of the Colorado and Little Colorado Rivers, the canyon bends more or less permanently east/west and Milky Way core views are few and far between.
This year, our day-one campsite got us a decent but not quite perfect view of the southern sky. Nevertheless, many rafters rose and gave it a try, with varying degrees of success—at the very least, it was good practice, and much was learned. On day two we had a magnificently open sky, but the southern horizon was behind us as we faced the river, so the Milky Way’s center rose above lots of shrubs and rocks. That night I and a few others photographed the view across the river toward the Big Dipper, North Star, and fainter part of the Milky Way in Cassiopeia, but a handful had some success photographing the brighter Milky Way from a hill facing south.
I knew days four and five would be long shots for Milky Way photography because Lindsay and I had in mind an east/west trending day-4 site directly across the river from Deer Creek Fall (fingers crossed), one of the trip’s photographic highlights. And there were no good candidates for day 5 (we ended up camping beneath Toroweap). But Lindsay had an ace up her sleeve for day 3, our first day on the east/west portion of the river, if we could pull it off.
In addition to being the day we bend west, day three is the much anticipated “rapid day.” After warming up with a couple of days of fairly infrequent mild to medium rapids, the action on day three ramps up considerably, both in rapid frequency and intensity. Rapid day is always so much fun, for most of the rafters the thoughts of night photography take backseat thrills and laughter.
While everyone else’s attention was on the river, in the back of my mind I was crossing my virtual fingers for the prosaically named Camp 118 (for the number of miles downstream from our starting point at Lee’s Ferry). Camp 118 had been on my radar since Lindsay had told me about it on our first day, citing a bend in the river that gives the spot a view of the southern sky that’s very rare on this part of the river. But she warned me that Camp 118 has other benefits that make it popular among all the trips on the river, and gave us a no better than 50 percent chance of scoring it.
Equal parts exhausted and exhilarated, late in the afternoon of day three we rounded a bend and found Camp 118 free and clear. Phew. As soon as we landed I did a quick check with my compass app and confirmed that the river here pointed due south. Camp 118 also had a long south-facing sandy beach that would give everyone ample room to setup and move around in the dark without getting in anyone else’s way. Once the boat was off-loaded I gathered the troops and told them to prepare for some the best Milky Way photography of the trip.
One more Grand Canyon Milky Way obstacle I forgot to mention is that even in the most favorable locations, the galactic core doesn’t rotate into the slot between the canyon walls until 2:00 a.m. or later. Often rafters go to bed with every intention of rising to photograph it, but when the time comes, their resolve has burrowed deep into the cozy folds of their sleeping bag. The best antidote is to be as prepared as possible before going to bed. At the very least, I prescribe the following: identify your composition, set up your camera, lens, and tripod, set your exposure, focus at infinity, and have your camera ready atop the tripod beside your cot. Better still, if it can be done without risk of someone stumbling over it in the dark, leave the camera composed and focused at your predetermined shooting spot.
I woke at 2:00 a.m. and found many already at work on the Milky Way, which was just making its way into view above the canyon wall in the east. During the next two-and-a-quarter hours I worked the scene while the galactic core slid from left to right, first above the river and finally down toward the wall on the west side of the river. I used both my Sony a7SII and a7RIII bodies, and my Rokinon 24mm f/1.4, Sony 12-24 f/4 G, and Sony 16-35 f/2.8 GM lenses.
Since getting my 42 megapixel a7RIII, I’ve been happy enough with its night photography results that I’d almost forgotten about my 12 megapixel a7SII. In fact, I seriously considered leaving my a7SII at home for this trip. I’m so glad I didn’t. Using the two side-by-side like this, offered an instant reminder why the a7SII is the night photography king. Combined with the light gathering ability of an f/1.4 lens, with my a7SII I can look through my viewfinder and focus perfectly in about three seconds. I can also get crazy-bright images in crazy-dark conditions like this.
I usually feel like the “star” of night images is the sky; because vertical orientation gives me the most sky and least foreground, most of my night images are oriented vertically, especially when the more or less vertically oriented Milky Way is present. But one of my goals for this trip was more horizontal Milky Way images, so I made a point of setting aside my vertical bias and shooting a lot of horizontal frames. This image (like all of my images) is a single click (no composite of multiple frames) with no artificial light added (no light painting or any other light besides stars and skylight). I saw several meteors that night, but have no specific memories of the small one darting across the upper middle of this frame.
I wrapped up with this scene a little before 4:00 a.m., but heading back to bed I saw the Big Dipper cradled between the two canyon walls, just above the north horizon, too beautiful to resist. I ended up photographing another 20 minutes or so on the other side of camp, ending up with one of my favorite images of the trip, including a meteor I very much remember. But that’s a story for another day….
A few tips for photographing the Milky Way
I have an entire article that spells out Milky Way photography, but here’s the CliffsNotes (is that still a thing?) version:
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Posted on November 28, 2017
Night photography always requires some level of compromise: extra equipment, ISOs a little too noisy, shutter speeds a little too long, f-stops a little too soft. For years the quality threshold beyond which I wouldn’t cross came far too early and I’d often find myself having to decide between an image that was too dark and noisy, or simply not shooting at all.
Because the almost total darkness of night photography requires a fast lens, the faster the better, one of the first compromises night photography forced on me was adding a night-only lens—a prime lens that was both ultra-fast and wide. Ultra-fast to maximize light capture, wide enough to give me lots of sky and to reduce the star streaking that occurs with the long shutter speeds night photography requires (the wider the focal length, the less visible any motion in the frame).
I started doing night photography as a Canon shooter, so my first night lens was a Canon-mount Zeiss 28mm f/2.0—it did the job but wasn’t quite as fast or wide as I’d have liked. After switching to Sony I added a Sony-mount Rokinon 24mm f/1.4—I loved shooting at f/1.4, and 24mm was a definite improvement over 28mm, but I still found myself wishing for something wider. And the Rokinon had other shortcomings as well: because the camera doesn’t even know the lens is mounted (f-stop set on the lens, not in the camera), I always had to guess the f-stop I used to capture an image. Worse than that, at f/1.4 the Rokinon had pretty significant comatic aberration that made my stars look like little comets.
Since switching to Sony, one compromise I’ve happily made is carrying an extra body that’s dedicated to night photography. Because the Sony a7S and (later) a7SII are just ridiculously good at high ISO, I was able to compensate for the Rokinon’s distortion by stopping down to f/2 or f/2.8 at a higher ISO. The a7SII is worth the extra weight, but I’ve longed for the day when I could replace the Rokinon lens with something wider, and something that had a better relationship with my camera.
That day came earlier this year, when Sony released the 16-35 f/2.8 GM lens. I got to sample this lens before it was released and was surprised by its compactness despite being so wide and fast—it wasn’t long before the 16-35 f/2.8 GM occupied a full-time spot in my camera bag. And in the back of my mind I couldn’t help thinking that the 16-35 GM might just work as a night lens.
I don’t have the time or temperament to be a pixel-peeper, but I had a sense that this lens was pretty sharp wide open, and few things reveal comatic aberration more than stars. I finally got my chance to test the 16-35 GM lens at night on the Hawaii Big Island workshop in September. When this year’s Milky Way images revealed that the 16-35 GM is sharp and pretty much aberration free at f/2.8, I couldn’t have been happier.
As with every night shoot, this night at the caldera I tried a variety of exposure settings to maximize my processing options later. I was pretty pleased to get a clean exposure at 10 seconds (minimal star motion) and f/2.8 (maximum light). While the a7SII doesn’t even breathe hard at the ISO 3200 I used for this image, I know if I were shooting someplace without its own light source (for example, at the Grand Canyon, the bristlecone pine forest, or pretty much any other location lacking an active volcano), I’d probably need to be at ISO 6400 or even 12800 to make a 10 second exposure work. But it’s nice to know that the a7SII and 16-35 f/2.8 GM will do the job even in darkness that extreme.
One more thing
A couple of weeks ago while in Sedona for Sony I got the opportunity to use the new a7RIII. One highlight of that trip was two night shoots with the new camera. I haven’t had a chance to spend any quality time with those images, but I got the sense that its high ISO performance is nearly as good as the a7SII. If that’s true, that will be one less compromise and a lighter camera bag—at least until Sony releases the a7SIII.
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Posted on June 9, 2017
Few experiences in nature surpass a dark sky brimming with an impossible number of stars. The darker the sky the better, and the sky doesn’t get much darker, or more impossible, than a moonless night at the bottom of the Grand Canyon. I schedule my annual Grand Canyon raft trip for the week of the new moon to ensure the darkest skies and the most stars; I prefer May because canyon temperatures are comfortably warm but not yet hot, and the Colorado River runs clear, unmuddied by sediment stirred by the summer monsoon.
As darkness seeps into the mile-deep gorge, the first pinpoints overhead are the planets, some combination of Venus, Jupiter, Mars, Mercury, and Saturn. Soon the darkness is as complete as we ever see it at home, and the planets are joined by the brightest stars in recognizable constellations. But unlike home, the darkening continues, and with every passing minute comes more stars, until it seems the sky can’t possibly hold any more.
Pausing to take it all in, the first thing to catch your eye in the unprecedented dark might be the Big Dipper—in May it’s high overhead as darkness falls, a comforting sight to disoriented observers still not convinced that this sky is real. Perhaps you’ll be temporarily distracted by the blinking lights of a distant jetliner, a silent reminder of the world left behind. A keen eye may discern a faint “star” moving among its neighbors—a satellite, possibly monitoring the weather, or sending GPS coordinates, or maybe even a foreign country secretly observing (smile!). And if you’re patient you might see a streaking meteor (or two, or three…), as if a hidden star has sprinted across the darkness and into a new hiding place.
But this visual feast is only the appetizer, because the main course, the Milky Way’s glowing band, isn’t served until close to midnight (or later, depending on the part of the sky that’s visible from the chosen vantage point). The Milky Way rises in the east, a band of light running north and south, ascending until it eventually spans the sky. Fainter in the north, the Milky Way brightens as your eyes follow it south, toward the glowing galactic core. The photogenic galactic core rises highest in the southern sky, so we hope for campsites with an open view in that direction. Since the Grand Canyon sky is crowded by tight, towering walls, the best views of the sky are usually up- or down-canyon.
Our best south-sky opportunities come on the trip’s first two nights, when we’re in Marble Canyon, the north/south trending section of the Grand Canyon that ends at the Little Colorado River confluence. At the confluence the canyon walls open to offer the trip’s best view of the sky, but just downriver the Colorado turns westward and the walls rise and squeeze closer. Fortunately, rather than beeline to Lake Mead, the Colorado River meanders a bit, bending north here and south there, providing an occasional view of the southern sky throughout the Grand Canyon.
Pulling into camp after a long day on the river, the first thing I do is find a spot for my cot that will ensure the best possible view of the night sky as I fall asleep. With my claim staked, I survey the surroundings for potential night photography scenes. Campsites on the Colorado River are first-come, first-served, and we have to hope we find one that’s oriented properly and has photogenic vantage points. Usually that means down by the river, but sometimes it’s an elevated location with the river in the distance. But if the campsite doesn’t have a photogenic vantage point, I’m not disappointed because nothing can take away my bedtime canopy.
If I find a scene I like, I compose, dial in my night exposure settings, and focus my camera well before dark. Sometimes I’ll compose and leave the camera poised on the tripod, ready for my return in the wee hours of the morning. If I’m afraid someone might stumble on my tripod in the dark, I leave it beside my cot, camera loaded and ready for action when I wake later.
On the trip’s third evening we pulled into camp exhausted but exhilarated after the trip’s most intense day of rapids. I found a view I liked near camp—getting there required a little rock scrambling that was no big deal with the sun out, but would require a bit more care. The Milky Way in May reaches its zenith in the south at around 3 a.m., but since we didn’t have a good view of the southern sky from this site, I decided the best views of the Milky Way would come earlier, when I could photograph it downstream, in the eastern sky. I woke at 1 a.m., grabbed my camera, and stumbled by the screen of my iPhone (the less artificial light my eyes are exposed to, the better they function when I try to photograph in the dark) to the spot I’d chosen. I could tell by a handful of glowing LCDs scattered downstream that I wasn’t the only one shooting. (On the first night I’d given the group instruction and guidance on photographing the Milky Way, but after that everyone was free to pick their spot and time, or stay in bed.)
I shot exclusively with my Sony a7SII and Rokinon 24mm f/1.4 lens. Once I’d perfected the composition and verified the sharpness, sticking with a 20 second shutter speed, I varied my ISO and aperture for more processing options later: ISO 3200, 6400, and 12,800; f1.4 and f2. At these settings I capture more light than my eyes take in—not only does this reveal more of the canyon than I can see, it also reveals even more stars.
I only photographed for about 20 minutes, but was so wired when I returned to my cot that I lay awake for another hour, mesmerized by my glittering ceiling.
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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 December 31, 2016
Tonight the calendar clicks over to a new year, ready or not. Most are ready. The general consensus is that 2016 has been a difficult year. Our warming planet lost too many creative souls, and was rubbed raw by contentious elections in every hemisphere. But here we are knocking on the door of 2017.
I’m lucky to have photography and the dose of perspective it provides. Whether it’s a double rainbow above the Grand Canyon, fountains of lava on Kilauea, or a meteor slicing the Milky Way above 4000-year-old trees, our terrestrial problems just seem a little less significant when I’m behind my camera.
As I review 2016’s contributions to my portfolio, I have to admit that the year wasn’t a complete loss. To me these images are so much more than photographs, they’re a reminder that I was there to witness each of these gifts from Nature.
So, without further adieu, here’s a selection of personal highlights from this emotional, transformative, contentious, unforgettable year.
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Happy New Year, everyone. Here’s to a great 2017.
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
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