Eloquent Images by Gary Hart
Insight, information, and inspiration for the inquisitive nature photographer
Managing light, depth, and motion in nature
Posted on January 29, 2017
Snowcap, El Capitan, Yosemite
Sony a7R II
Sony/Zeiss 24-70 f4
3.2 seconds
F/10
ISO 50
Independent of composition, photographers have three scene variables to play with when setting up a shot: light, depth, and motion. And not so coincidentally, we have three exposure parameters with which to manage those variables: shutter speed, f-stop, and ISO. The exposure parameters have a reciprocal relationship—an increase/decrease in one can be compensated by a corresponding decrease/increase in another—but merely getting the “correct” exposure with a random combination of exposure values can yield wildly different results. This is why I never want my camera making decisions for me, and always photograph in manual mode. It’s also why I tell my workshop students that they should be able to defend (explain their reason for) every exposure value.
My approach to metering
As a landscape photographer who is always on a tripod, I’ve removed camera shake from the exposure equation, so the only motion that concerns me is motion in the scene. Unless I’m trying for a motion effect (for example, blurring moving water or freezing wind-blown leaves) I use the f-stop and ISO that yields the absolute sharpest, cleanest image—no quality compromise (such as a large f-stop or high ISO) to subdue camera shake. This allows me to approach every scene at ISO 100 (most camera’s best ISO) and f/8 – f/11 (the maximum depth of field possible with minimal diffraction, and also the range where most lenses tend to be sharpest), and only deviate when my scene variables dictate.
Once I determine my composition, I refine the f-stop to ensure to depth of field that achieves my desired effect, then dial my shutter speed to whatever value delivers the proper exposure. My ISO only moves from 100 when motion in the scene requires it. For example, photographing at night requires a shutter speed fast enough to minimize star motion and I’m force to increase my ISO to 800, 1600, or higher, depending on the amount of light and the focal length at which I’m shooting.
About this image
In this image from last Monday’s snow day in Yosemite, I wanted to smooth the rapidly flowing Merced River to smooth chop that I thought might distract from rest of this spectacular scene, but first I had to get everything else in place. I on a fairly tight vertical composition that eliminated everything on the left and right of El Capitan. I used the snow-capped boulders in the foreground to create a little depth, and included just a little sky for some extra color (if the clouds swirling about El Capitan had been more interesting, I might not have done this).
Aligning the foreground boulders was both tricky and awkward. First, I had to wade through a couple of shallow pools to reach a one-rock island (not much bigger than a basketball), then thrust my tripod into the water as far to the left as I could and still operate my camera. A focal length too narrow would have cut off important elements, and too would have introduced distractions just outside this frame. Where the camera was positioned, I couldn’t get my eye to the viewfinder without going for a swim, and there was too much light to see my LCD clearly. So I pulled my camera from the tripod and framed the composition to get the right focal length. With my composition established, I decided f/10 was the largest aperture that would ensure front-to-back sharpness, and focused on a ripple a little behind the boulders.
Finally ready to shoot, I returned the camera to the tripod and used what I could see of the LCD to guess the final composition. After each click I removed the camera and reviewed the image in my electronic viewfinder (another reason I love the EVF), adjusting two or three times until the composition was right.
With my composition framed exactly as I wanted, my exposure dialed in, and my focus point set, I was ready to play with the motion. I started by dropping my ISO to 50 (almost as good as ISO 100, but with slightly less dynamic range), but still couldn’t get the shutter speed long enough without shrinking my f-stop to a less than ideal, diffraction inducing number.
The solution was my Singh-Ray Vari-ND filter. Because my Vari-ND is 77mm, I had to stretch to hold it in front of my 67mm Sony/Zeiss 24-70 f4. Dialing the filter ever so slightly darker between exposures and adjusting my shutter speed to maintain the correct exposure, I ended up with a variety of motion effects. I found that this one, at around 3 seconds, smoothed the water enough while retaining just enough texture for visual interest without being distracting.
Yosemite Winter Photo Workshop
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A Gallery of Motion
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It ain’t over till it’s over
Posted on January 26, 2017
After Twilight, Valley View, Yosemite
Sony a7R II
Sony/Zeiss 24-70 f4
30 seconds
F/8
ISO 800
(How many photography blogs out there quote Yogi Berra? Just sayin’….) During the 1973 baseball season, Yogi Berra was asked about his last place Mets’ chances in the pennant race. His reply, “It ain’t over till it’s over,” was greeted with chuckles, but Yogi got the last laugh when the Mets rallied to make it all the way to the World Series. I couldn’t help thinking of Yogi’s quote on my drive home Monday night with this image, my final click of the day, still fresh in my mind.
When the weatherman promised snow down to 2500 feet on Monday, I drove to Yosemite late Sunday night so I could beat sunrise and have an entire day to play. And snow I found, lots and lots of it, and still falling. The snowfall continued throughout morning, so heavy that my first few hours were limited to photographing close scenes, interspersed with lots of waiting for conditions to improve. But a little before noon the clouds started to thin and the snow became more showery and I was in business.
When the clearing started in earnest I was at Valley View (but it didn’t look anything like this). The rest of the day I spent dashing around Yosemite Valley, chasing the clouds’ parting and the light that came with it. It’s so much fun watching a storm clear in Yosemite, poised beneath Yosemite Falls or Half Dome or El Capitan, and wait for the big reveal when the clouds to pull back.
For sunset I ended up trudging through about 18 inches of virgin snow to a favorite Half Dome reflection spot by the Merced River, recently rendered much less accessible by major roadwork underway in the valley. Throughout the day I’d crossed paths several times with good friend Don Smith who had driven up for the day with our mutual friends Scott and Mike, and they eventually joined me at sunset. As we shot we shared stories of the day—for example, how they had just missed getting crushed by a falling tree (true story). After a half hour of really nice photography, a large cloud set up shop atop Half Dome right around sunset, completely obscuring the scene’s main attraction. Satisfied with a tremendous day of photography, we declared the day, “Over.”
It wasn’t until I was back at my car that fully appreciated how wet everything was—my gear, my car, and even me (a day of plunging through snowdrifts had been enough for the snow to find its way over the top my waterproof boots and underneath my waterproof outer pants). I decided I’d swing into Valley View on my way out of the valley to use the bathroom and change into drier clothes. In the back of my mind was possibility of a parting shot of El Capitan in the late, blue twilight.
The west end of Yosemite Valley gets much less winter sunlight, so while trees had already started shedding the snow on the east side (where I’d photographed sunset), I pulled in at Valley View to find virtually every exposed surface still glistening white. Bridalveil Fall and Cathedral Rocks clearly visible in the fading light, but El Capitan was cloud-shrouded from top to bottom. Still quite cold, tired, and more than a little hungry, this would have been a perfect excuse to beeline home. But the scene was so beautiful, and the light so perfect, that after changing my clothes I just sat in my car, peeled an orange, and waited for El Capitan to show itself.
I didn’t have to wait long. At the first sign of clearing I hopped out and was completely set up by the river before El Capitan appeared. Bumping my ISO to 800, I composed the standard horizontal frame with El Capitan on the left, Leaning Tower on the right, and the Merced River in the foreground. Often the most difficult thing about shooting in low light like this is finding focus, but despite the fact that it was more 30 minutes after sunset, my Sony a7RII was able to autofocus on Cathedral Rocks. I spent a several clicks refining that original composition and was about to call the day “Over” one more time when something moved me to shift my view to the right. As soon as the image popped up on my LCD I knew I was onto something. I refined for about a half dozen more frames, culminating with the one you see here, until I was satisfied that a great day truly was over.
The lesson here, one I learned many years ago but I see many photographers struggle to grasp, is that the camera can still do fantastic things long after your eyes tell you the show is over. Another satisfying reminder from this day is that it’s still possible to enjoy Yosemite in glorious peace. As someone who has seen Yosemite at its congested worst, I relish the solitude possible when I choose times that the average person (tourists, fair weather photographers) won’t venture out: miserable weather, late at night, before sunrise. The entire time I was out there at Valley View that evening I was alone, and only two cars drove by. As Yogi would say, “Nobody goes there anymore—it’s too crowded.”
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A Twilight Gallery
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Seeing double
Posted on January 22, 2017
Autumn Mirror, Half Dome, Yosemite
Sony a7R II
Sony/Zeiss 16-35 f4
30 seconds
F/8
ISO 50
People stay away from Yosemite in autumn because that’s when the waterfalls are at their lowest. But believe it or not, Yosemite isn’t all about waterfalls. El Capitan, Half Dome, Cathedral Rocks, the Three Brothers (I could go on) are great subjects in their own right. Subtract the waterfalls but add the yellows, oranges, and reds of Yosemite Valley’s many deciduous trees and you have what I think is a pretty a fair trade. And when the water is low, the usually turbulent Merced River smooths to a reflecting ribbon of glass; suddenly, pretty much any scene can be doubled at your feet.
These reflections add layers of creative possibilities impossible the rest of the year. I usually try to photograph each reflection scene several ways—splitting it in the middle for a 50/50 mirror effect, isolating the reflection only, emphasizing the reflection with just enough of the primary scene to establish context, and using a partial reflection to accent to the primary scene—then decide later which I like best.
In this image I split the frame 50/50, but dialed down the reflection with my polarizer. Even polarized, the bright sky’s glare washed out much of the river surface, painting the outline of El Capitan like a negative that uses the trees with a jigsaw of submerged river rocks.
This one is all about the reflection, with the snow-covered forest used to frame El Capitan’s image in the Merced River. Here I dialed my polarizer to a mid-point, holding the reflection of El Capitan but dialing down the homogenous gray sky.
Here I used a more conventional composition, emphasizing El Capitan’s bulk against clouds that were spitting small, wet snowflakes.
About this image
I took another favorite approach for the featured image at the top of this post, using a long exposure in low light to smooth moving water and enhance the reflection. My workshop group had already had a nice shoot that evening—it started with warm, late light on Half Dome, some nice color at sunset, and rapping up with textured clouds above Half Dome as darkness fell.
By the time I captured this frame the scene was much darker than what you see here. With the reflection disturbed by slight ripples and floating bubbles, the darkness of post-sunset twilight enabled me to extend my shutter speed to 30 seconds, which smoothed the reflection and turned the bubbles into soft white streaks.
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A Gallery of Yosemite Reflections
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Dressed for chill
Posted on January 17, 2017
Autumn Morning, Leidig Meadow, Yosemite
Sony a7R II
Sony/Zeiss 24-70 f4
1/15 second
F/11
ISO 125
A regrettable reality of my life is that the best conditions for photography are usually the absolute worst conditions to be outside. Fortunately, I’ve been hardened by decades of San Francisco Giants games at Candlestick Park, the coldest place on Earth. As a photographer, I continue to embrace my mantra for warmth at the ‘Stick: Too much is always better than not enough.
For me it’s all about layers: silk, wool, down, and Gore-Tex. I start winter mornings with wool socks, waterproof boots, silk long-johns (if it’s extremely cold), flannel lined jeans, wool long-sleeve undershirt, wool Pendleton or lined cotton shirt, vest, down jacket, gloves (I have a variety from thin to thick), neck gaiter, and a hat or band that covers my ears. I add and remove layers as conditions dictate, and don’t always wear everything, but I’m never too far from this stuff in winter. And if it’s raining or snowing, I add waterproof pants, a waterproof parka, waterproof boots, and a wide-brim waterproof hat to keep myself dry, freeing my umbrella to keep my gear dry while shooting.
The basic clothes I pack in my suitcase before each trip, but the gloves/hats/umbrella etc. are in a gym bag that is always in my car. In the car I also keep an extra pair of shoes and socks, towel, and garbage bag (to cover my camera when it’s on the tripod). With all this paraphernalia, I’m nice and toasty in whatever extremes the winter throws at me, and I can never use weather as an excuse for missing a shot.
About this image
On a very chilly morning in late October, my workshop group had wrapped up the sunrise shoot and was heading to breakfast when we passed Leidig Meadow beneath a thin veneer of fog. Knowing that the group was cold and hungry, I kept going, but in the cafeteria parking I polled everyone and found that while about half were ready for warmth and a hot breakfast, the other half wanted to return to photograph the meadow. They got no argument from me. In normal conditions this wouldn’t have been possible because Yosemite’s primarily one-way traffic flow would have required a 20-minute loop to return to this spot, and the fog would likely have been long gone. But this year, extensive roadwork had caused the National Park Service to make every open road two-way, and we were back at Leidig Meadow in two minutes.
Yosemite’s radiation fog can come and go in seconds (I crossed my fingers that it hadn’t dissipated in the five minutes since our original drive-by), so as soon as we parked the group grabbed their gear and scattered. Wanting a foreground that was more than just meadow grass, I ran for this downed tree that I’d seen on an earlier visit.
We only got about five minutes of quality shooting in before the fog was gone. All of my shots were some variation on this composition using the log anchoring the bottom of scene, and Half Dome framed by the nearby trees on the left and distant yellow cottonwoods on the right. To maximize my focal length and make Half Dome larger, I moved back as far as I could without losing my framing. The horizontal trunk was far enough away that I was able to achieve depth of field all the way to infinity when I focused there.
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A Cold Weather Gallery
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Sanity check
Posted on January 7, 2017
Nightfall, Half Dome and Sentinel Fall, Yosemite
Sony a7R II
Sony/Zeiss 24-70 f4
1/2 second
F/9
ISO 100
Are you insane?
Albert Einstein defined insanity as doing the same thing over and over again and expecting different results. Hmmm. For some reason this makes me think of the thousands of aspiring landscape photographers with portfolios brimming with beautiful images that they can’t sell.
Despite a great eye for composition, all the latest gear, insider knowledge of the best locations, and virtual guru status with Photoshop, somehow they haven’t managed to separate themselves from the large pack of other really good photographers. Their solution to anonymity is more: more locations, more equipment, more software. (Perhaps you even know such a photographer.) Compounding the problem, many photographers have become so mesmerized by technology that they turn over control of the most important aspects of their craft to their camera, completely discounting the most powerful tool at their disposal, the one on top of their shoulders.
Knowledge vs. understanding
Just as a new camera won’t make you a better photographer, neither will simply upgrading your knowledge of the latest gear, or accumulating . Knowledge is nothing more than information ingested and regurgitated. On the other hand, understanding is fundamental insight into the workings of a process. While knowledge might enable you to impress table-mates at a dinner party, understanding gives you the ability to use information to create new knowledge—solve problems.
Many photographers invest far too much energy accumulating knowledge, and far too little energy understanding what they just learned. For example, I see many photographers relying on a formula for determining the shutter speed that freezes star motion at a given focal length, oblivious to the fact that this formula doesn’t consider other equally important variables such as display size and the direction the camera is pointing (yes, that’s important). Similarly, simply knowing that a longer shutter speed, bigger aperture, or higher ISO means more light is of limited value if that knowledge doesn’t translate into an understanding of how to manage light, motion, and depth with your camera.
Take control
Pretty much anyone can pick up a camera, put it in auto exposure mode, and compose a nice image. While the automatic modes in most cameras “properly” (conventionally) expose most scenes, they struggle in the limited light, extreme dynamic range, and harsh conditions that artistic nature photographers seek. Worse than that, relying on the automatic exposure modes eliminates a photographer’s best opportunity for creativity—the ability to control a an image’s depth, motion, and light.
Too many aspiring photographers are stuck creatively because their unwavering faith in technology leaves them with a critical deficiency in two fundamental, related photographic principles:
- How a light meter determines the exposure information it gives you. This seems so basic, but auto-exposure and histograms have fooled many into thinking they understand metering and exposure. (Don’t get me wrong—the histogram is a wonderful tool for the photographer who truly understands it.)
- How to use the reciprocal relationship between aperture, shutter speed, and ISO to manage photography’s three variables: light, depth, and motion. This is the universal tool that enables photographers to handle the limiting factors of every scene.
Books and internet resources are a great place to start acquiring these principles, but the knowledge you gain there won’t turn to understanding until you get out with your camera and apply them. When these principles become second nature, you’ll be amazed at what you’ll be able to accomplish with your photography.
Insanity is in the mind of the beholder
If landscape photography already gives you everything you want, by all means continue doing what you’re doing. But if you’re having a hard time achieving a creative goal, I suggest that the solution is likely not doing more of what you’re already doing. Instead, start by reevaluating your comprehension of fundamental photographic principles that you might not have thought about for years. You’ll know you’re there when you have complete control of the light, motion, and depth for every scene you encounter, know how to get the result you want, or understand why it’s simply not possible.
Do I really think you’re insane for doing otherwise? Of course not. But I do think you’ll feel a little more sane if you learn to take more control of your camera.
About this image
The image at the top of the post is from a visit to Yosemite this past December. I’d guided my workshop group here for the rise of a nearly full moon, crossing my fingers that clouds wouldn’t obscure our view. The clouds exited just in the nick of time for us to enjoy a beautiful moonrise into the indigo twilight. I started with fairly tight compositions when the moon was close to Half Dome, but in the still, chilled air shortly after sunset, a thin radiation fog formed above Leidig Meadow and I started looking for a wider composition that would add the meadow to the moon and Half Dome.
Before thinking about the scene’s light, depth, and motion variables, I spent a lot of time just assembling the elements of my composition. I decided to frame the scene with Half Dome on the left and Sentinel Fall on the right, positioning myself so a group of tall foreground evergreens, mirrored by towering Sentinel Rock in the background, anchored the center of my frame. I knew that would require a wide composition that would render the moon very small, but I moved back as far as I could to allow the longest possible focal length to avoid shrinking the moon to pinhole size.
By far my biggest exposure concern was dynamic range—the moon is daylight bright, while the rest of my scene was deeply shaded. Normally I trust my histogram in these high dynamic range situations, but in this case the moon was so small that I knew it wouldn’t register. Instead I used my Sony a7RII’s pre-capture “zebra” highlight alert that indicates the parts of my scene that are overexposed.
At just a little wider than 24mm, with no significant detail in my immediate foreground, I stopped down to a fairly diffraction safe f/9. I’m always at ISO 100 unless I can’t achieve the amount of light I want at my ideal aperture and shutter speed, and in this case ISO 100 worked just fine. With my f-stop and ISO set, I increased my shutter speed slowly, checking the moon after each 1/3-stop click for the zebras (if you don’t shoot mirrorless, you can set blinking highlights and check the moon for “blinkies” when you review the image on your LCD). Since I know my camera well enough to know that I could push my exposure at least a full stop beyond the point where the zebras appeared, then recover the highlights in the Lightroom raw processor.
This image looked quite dark on my LCD, and the histogram was way to the left, but after loading it onto my computer and pulling the Lightroom Shadows slider to the right, I recovered an unbelievable amount of clean (low noise) detail, even in the darkest shadows. I just continue to be blown away by the dynamic range of this a7R Mark 2 sensor that enables me to capture scenes I’d never imagined possible in my previous (Canon) life. In this case I probably could have brightened the image further in processing, but I wanted a more moody, twilight feel.
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Yosemite Less Traveled
Eloquent Images by Gary Hart 