One Fine Morning

Gary Hart Photography: One Fine Morning, Grandview Point, Grand Canyon South Rim

One Fine Morning, Grandview Point, Grand Canyon South Rim
Sony a7RIII
Sony 16-35 f/2.8 GM
1 second
F/18
ISO 100

Confession: 4:30 wake-ups aren’t my favorite part of being a landscape photographer. But honestly, the worst part of an early wake-up starts the instant the alarm goes off and lasts until I get out of bed, so I’ve trained myself to set my alarm with zero time to spare, which forces me to rip off the wake-up bandaid.

Though sunrise doesn’t always work out photographically, it rarely lets me down emotionally. There’s no better time of the day to be outside, when all nature’s sensory inputs are coming alive and the din of humankind is still asleep. Even in a crowded national park like Grand Canyon, it’s the best time of the day to hear the birds conversing and savor the whisper of water and wind. And with the atmosphere unfiltered by human pollutants, the spectacular sights never feel closer.

I just wrapped up two workshops at Grand Canyon. These workshops were built to maximize our lightning capture opportunities, and in that regard each workshop was a major success. But we had other memorable moments that had nothing to do with lightning, with probably most memorable being the second group’s first sunrise. (Or the first group’s first sunset, but that’s a story for a different day.)

On that morning’s eastward drive to Grandview Point, we’d passed through a couple of rain showers, but through the trees I caught a glimpse of an opening on the eastern horizon. Clouds overhead with a gap low in the east is the recipe for a colorful sunrise, but not wanting to jinx us, I kept my mouth shut until the pre-shoot orientation (a quick summary of the site—where to go and what to look for). I also suggested the possibility of a rainbow and where it would be, and gave everyone a quick refresher on how to capture a sunstar before setting them free to explore and create.

Our morning started with a deep red glow on the eastern horizon that slowly brightened and spread across the sky. With the brightening horizon behind Desert View signaling the sun’s approach, the clouds took on a shimmering pink hue. Anticipating a sunstar opportunity, I composed my scene and stopped my Sony 16-35 f/2.8 lens (my favorite sunstar lens) down to f/18. I had several minutes to spare and spent them taking in my surroundings, then snapped to action with the first brilliant rays of direct sunlight. Unlike many mornings, the color hung in there for a couple of minutes after the sun’s arrival, all the time I needed to capture this frame.

Right in the midst of my sunstar shoot someone in the group shouted “Rainbow!” and I whipped around to confirm. I’d already decided this was a pretty special sunrise, but thought the rainbow, though not complete or ideally positioned, would be the cherry on top. But the show wasn’t over—when the sun rose into the clouds and the light flattened, people started to pack up. But I noticed a few holes that would almost certainly soon send crepuscular rays (god rays) into the canyon, so we hung around long enough to add that to the morning’s checklist. Color, sunstar, rainbow, god-rays—not a bad way to start the day. (I haven’t processed the rainbow and crepuscular rays images yet—stay tuned.)

Join me for a Grand Canyon photo workshop


Memorable Sunrises

Click an image for a closer look and to view a slide show.

 

Expose yourself

Gary Hart Photography: Glisten, Diamond Beach, Iceland

Glisten, Diamond Beach, Iceland
Sony a7R III
Sony 12-24 f/4 G
1/25 second
F/18
ISO 100

With advanced exposure and metering capabilities, cameras seem to be getting “smarter” every year. So smart, in fact, that for most scenes, getting the exposure right is a simple matter of pointing your camera and clicking the shutter button. That’s fine if all you care about is recording a memory, but not only is there more to your exposure decision than getting the amount of light in your picture, there are many reasons to over- or underexpose a pictures. For the creative control that elevates your images above the millions of clicks being cranked out every day, giving control of one of its most important responsibilities to your camera overlooks an undeniable truth…

Your camera is stupid

Sorry—so is mine. And while I can easily cite many examples, right now it’s just important that you understand that your camera thinks the entire world is a middle tone. Regardless of what its meter sees, without intervention your camera will do everything in its power to make your picture a middle tone. Sunlit snowman? Lump of coal at the bottom of your Christmas stocking? It doesn’t matter—if you let your camera decide the exposure, it will turn out gray.

Modern technology offers faux-intelligence to help overcome this limitation. Usually called something like “matrix” or “evaluative” metering, this solution compares a scene to a large but finite internal database of choices, returning a metering decision based on the closest match. It works pretty well for conventional, “tourist” snaps, but often struggles in the warm or dramatic light artistic photographers prefer, and knows nothing of creativity. If you want to capture more than documentary “I was here” pictures, you’re much better off taking full control of your camera’s metering and exposure. Fortunately, this isn’t nearly as difficult as most people fear.

Laying the foundation

The amount of light captured for any given scene varies with the camera’s shutter speed, f-stop, and ISO settings. Photographers measure captured light in “stops,” much as a a cook uses a cup (of sugar or flour or almonds or whatever) to measure ingredients in a recipe. Adding or subtracting “stops” of light by increasing or decreasing the shutter speed, f-stop, or ISO makes a scene brighter or darker.

The beauty of metering is that a stop of light is a stop of light is a stop of light, whether you control it with the:

  • Aperture: The opening light passes through when the shutter opens, measured in f-stops
  • Shutter speed: The time the shutter is open, allowing light to pass through the aperture to reach the sensor—slower shutter speeds mean more light; faster shutter speeds mean less light
  • ISO: The sensitivity of the sensor (or film) to light

But while an aperture stop adds/subtracts the same amount of light as a shutter speed or ISO stop, the resulting picture can vary significantly based on which exposure variable combination you choose. Your shutter speed choice determines whether motion in the frame is blurred or frozen, while the aperture choice determines the picture’s depth of field. And while an ISO stop also adds/subtracts the same amount of light as shutter speed and aperture without affecting motion and depth, image quality decreases as the ISO increases. So getting the light right is only part of the exposure objective—you also need to consider how you want to handle any motion in the scene, and how much depth of field to capture.

For example, let’s say you’re photographing autumn leaves in a light breeze. You got the exposure right, but the leaves are blurred. To freeze that blur, you halve the time the shutter is open (faster shutter speed) to freeze the motion, but also reducing the light reaching the sensor by one stop. To replace that lost light, you could open your aperture by a stop (change the f-stop), double the ISO, or make a combination of fractional f-stop and ISO adjustments that total one stop. That’s a creative choice your camera isn’t capable of.

Metering modes

Today’s cameras have the ability to measure, or “meter” the light in a scene before the shutter clicks. In fact, most cameras have many different ways of evaluating a scene’s light. Your camera’s metering mode determines the amount of the frame the meter “sees.” The larger the area your meter measures, the greater the potential for a wide range of tones. Since most scenes have a range of tones from dark shadows to bright highlights, the meter will take an average of the tones it finds in its metering zone.

Metering mode options range from “spot” metering a very small part of the scene, to “matrix” (also know as “evaluative”), which looks at the entire scene and actually tries to guess at what it sees. Each camera manufacturer offers a variety of modes and there’s no consensus on name and function (different function for the same name, same function for different names) among manufacturers, so it’s best to read your camera’s manual to familiarize yourself with its metering modes.

Since I want as much control as possible, I prefer spot metering because it’s the most precise, covering the smallest area of the frame possible, an imaginary circle in the center three (or so) percent (depending on the camera) of what’s visible in the viewfinder. Spot metering, I can target the part of the frame I deem most important and base my exposure decision on the reading there.

Spot metering isn’t available in all cameras. In some cameras, the most precise (smallest metering area) metering mode available is “partial,” which covers a little more of the scene, somewhere around ten percent.

Exposure modes

Don’t confuse the metering mode with the exposure mode. While the metering mode determines what the meter sees, the exposure mode determines the way the camera handles that information. Most DSLR (digital single lens reflex) and mirrorless cameras offer manual, aperture priority, shutter priority, and a variety of program or automatic exposure modes. Serious landscape photographers usually forego the full automatic/program modes in favor of manual (my preference) or aperture/shutter priority modes that offer more control.

If you select aperture or shutter priority mode, you specify the aperture (f-stop) or shutter speed, and the camera sets the shutter speed or aperture that delivers a middle tone based on what the meter sees. But you’re not done. Unless you really do want the middle tone result the camera desires (possible but far from certain), you then need to adjust the exposure compensation (usually a button with a +/- symbol) to specify the amount you want your subject to be above or below a middle tone.

For example, if you point your spot meter at a bright, sunlit cloud, the camera will only give your picture enough light make the cloud a middle tone—but if you’ve only given your scene enough light to make a white cloud gray, it stands to reason that the rest of your picture will be too dark. To avoid this, you would adjust exposure compensation to instruct your camera to make the cloud brighter than a middle tone by adding two stops of light (or however much light you want to give the cloud to make it whatever tone you think it should be).

Rather than aperture priority, I prefer manual mode because I never want my camera making decisions for me. And once it’s mastered (a simple task), I think manual metering is easier. In manual mode, after setting my aperture (based on the depth of field I want), I point my spot-meter zone (the center 3% of the scene in my viewfinder) at the area I want to meter on and dial in whatever shutter speed gives me the amount of light I think will make that subject (where my meter points) the tone I want. That’s it. (In manual mode you can ignore the exposure compensation button.)

Trust your histogram

I see many people people base exposure decisions on the brightness of the image on the LCD. The typical approach is some variation of: 1) Guess at the exposure settings 2) Click 3) Look at the picture on the LCD 4) Adjust 5) Repeat. Not only is this approach lazy, it’s a waste of time and woefully inaccurate.

I call it lazy because these photographers (but of course I don’t mean you) don’t care enough about their craft to apply a skill that only takes minutes to learn (see above), a skill that will serve them best in the most difficult exposure situations. But that’s not the real problem—the real problem is the inaccuracy introduced by trusting the image on your LCD.

LCDs vary in brightness because viewing conditions change. With a brightness adjustment in every camera’s menu, many photographers simply turn their brightness to maximum because it’s easier to see, especially in sunlight, and a bright picture usually looks better. Other photographers use an auto-brightness setting that adjusts with ambient light—the more light it detects, the brighter the display.

Regardless of your LCD’s brightness setting, the variation in brightness of the screen and/or the ambient light make the image on the LCD a very unreliable exposure indicator. When people tell me their images are usually too dark on their computer or in prints, the first thing I do is check the brightness of their camera’s LCD—if it’s set to maximum, they’re likely fooled into thinking the exposure was brighter than it actually was.

How do you fix this? Simple: Learn to read a histogram, and never use your camera’s LCD for exposure decisions again. The histogram is as simple as it is useful.

Day's End, Ke'e Beach, Hawaii

Day’s End, Ke’e Beach, Hawaii

Ke'e Beach histogram

A histogram is a plot of the tones in an image. I’ll save a more complex explanation for another day, but all you really need to know is that the graph starts with black on the left and brightens to white on the right. Every pixel in the image is sampled for its brightness—the brighter it is, the farther to the right it falls on the histogram. Anything in the image that’s too dark to display detail (black) is “clipped” (cut off) on the left side; anything in the image that’s too bright too display detail is clipped on the right. Ideally, nothing will be clipped on either side. If your scene contains a greater range of light (dynamic range) than will fit in the histogram, one side or the other will clip and you have exposure decisions too make—HDR (blending multiple exposures), graduated neutral density filters, or deciding that it’s okay to lose one side or the other (shadows or highlights). For example, the Ke’e Beach image above is predominantly middle tones, with just a few extremely bright and extremely dark pixels.

One more time

So let’s review. Start by selecting your metering mode (the way your meters”sees” the scene: spot, partial, matrix, and so on), then take your camera out of auto exposure mode and put it in manual (my recommendation) or aperture priority (if you prefer) mode. (Remember, I’m a landscape photographer so I never use shutter priority; if you’re shooting action, to better control the motion in your frame, you probably want to consider shutter priority if you don’t like manual exposure.)

Before metering, set your camera to whatever aperture you decide your composition calls for. Then meter, remembering that your camera isn’t telling you what the exposure should be, it’s telling you the exposure that will make what it sees a middle tone. Finally, correct the meter’s middle-tone bias by dialing in the shutter speed (in manual mode) or exposure compensation (in aperture priority) that gives the correct exposure.

After you click, check your histogram to be sure you got the exposure right.

What’s the correct exposure? That’s a creative choice that’s entirely up to you—feel free to play until you’re comfortable with your results. And the more you do it, the easier it gets.

For example

Below are some sample images and the thought process I followed to get the exposure.

Winter Reflection, El Capitan, Yosemite

Winter Reflection, El Capitan, Yosemite After choosing the aperture that gave me the depth of field I wanted, I spot-metered on the sunlit portion of El Capitan’s reflect (because it was the brightest thing in my frame and dialed my shutter speed until the meter indicated +2. That setting gave me enough light to resolve details in the shadows, but not so much light that the El Capitan highlights were blown out. If I’d have followed my meter’s “suggestion” to make El Capitan’s highlights a middle tone, the entire scene would have been too dark.

Here’s one matrix/evaluative metering would have made a mess of. The dynamic range (range of light between the darkest shadows and brightest highlights) was off the charts. Rather than compromise, I exposed to hold the color in the sky and let the foreground go to silhouette. I metered on the brightest (goldish) part of the sky next to Half Dome and dialed my exposure to +.3 (1/3 stop above middle tone). The sky was brighter than what you see here, but underexposing like this allowed me to emphasize the sky’s rich blue and the very Yosemite outline of Half Dome and Sentinel Dome. The highlights in the thin lunar crescent were clipped, but I didn’t care about the moon’s detail, only it’s shape.

Who says you should never blow your highlights? Here I metered on the brightest part of the poppy (near the top), setting my exposure to .7 (2/3 stop above middle tone). Everything you see that’s white is blown blue sky (except the “star,” which is a sliver of the sun).

Now get to work

Don’t wait to apply all this for the first time until you really, really want the shot. Instead, find a time when the results don’t matter and play with your camera to find out how much control you have over exposure. In fact, you can do this right now in your backyard or even sitting right there in your recliner. Meter something nearby, set an exposure, and click. Look at the result, adjust the exposure, and click again. Watch your histogram, and watch how its shape shifts right as you increase the exposure, or left as you decrease it. Continue doing this until you’re confident in your ability to make a scene brighter or darker, and can consistently achieve the exposure you expect.

About this image

Gary Hart Photography: Glisten, Diamond Beach, Iceland

Glisten, Diamond Beach, Iceland

It not too difficult to figure out how Iceland’s Diamond Beach got its name. A black sand beach on Iceland’s south coast, just down stream from Glacier Lagoon, Diamond Beach is dotted with glistening blocks of ice ranging in size from a refrigerator ice cube, to an entire refrigerator.

As spectacular as Diamond Beach was on my first visit, it was also unlike anything I’d ever seen, so it took me a little while to figure out how I wanted to shoot it. I tried a few frames that used long shutter speeds to blur the motion of the waves around the ice, but when the sun appeared, I saw another opportunity.

With my Sony 12-24 G lens on my Sony a7RIII, I set up just a couple of feet from one of the larger icebergs, went all the way out to 12mm, and waited for the sun to peek above the ice, hoping to capture a sunstar. As I waited, I tweaked my exposure settings, dialing my aperture to f/18 to maximize my depth of field and to enhance the sunstar effect. When the sun appeared I was in business; as it rose, I dropped my camera lower to keep just a small sliver of sun visible above the ice.

Any frame that includes the sun is frame with lots of dynamic range. To get my exposure right for this image, I relied entirely on the histogram and ignored the image on the LCD, with its nearly black shadows and white sky. Despite the way  histogram told me I’d captured all the tones, and I confirmed that as soon as I started processing in Lightroom.

Workshop Schedule || Purchase Prints


Taking Control in Difficult Light

Click an image for a closer look, and a slide show.

Off to a great start

Gary Hart Photography: Last Light, Lake Wakatipu, New Zealand

Last Light, Lake Wakatipu, New Zealand
Sony a7R III
Sony 24-105 f/4 G
.8 seconds
F/18
ISO 50

It’s a little ironic that on my first day back from New Zealand, I’m (finally) starting a blog post about the start of my winter workshops there. When I departed for New Zealand about a month ago, I had the best intentions to post several times per week, but soon realized there was going to be precious little time for that. I’ve processed a few images from the trip, but have only just scratched the surface of what I’m certain will turn out to be the most photographically rewarding four weeks of my life. But the rewards of this trip turned out to be so much more than photographic, and I have some great stories to share.

First, a little background

I’ve been leading photo workshops for a dozen years. From the outset my friend and fellow pro photographer Don Smith and I have had a reciprocal workshop relationship: he assists a few of my workshops, and I assist a like number of his workshops. In 2013 Don and I added a collaborative workshop at the Grand Canyon during the monsoon season (lightning photography)—instead of the workshop being owned by one and assisted by the other, we share the planning, marketing, and leading responsibilities 50/50. The Grand Canyon workshop became so successful (and enjoyable for both of us) that we’ve since added collaborative workshops at the Columbia River Gorge and on the Oregon Coast.

The next frontier

The New Zealand workshops take our collaborative workshop model to a new level. Not only are they our first international workshops, they’re much longer and more immersive. We’ve always provided lodging, but for New Zealand we added transportation (including a driver) and many meals.

Organizing a 10-day, 5 town workshop half-way around the world adds unprecedented layers of complications. Not just finding the best photo locations with good backups for weather closures, but also arranging lodging, meals, and permits. Though we’d scouted our locations thoroughly, had the permits, lodging, meals, and transportation arranged, we had no idea what it would be like photographing, eating, and traveling with a group for many consecutive hours, every day for 10 days. It turns out that our anxiety was completely unfounded.

It’s a sign

After the workshop orientation we hit Glenorchy Road on the shores of Lake Wakatipu for our first sunset shoot. Following a preliminary stop at Wilson Bay, where we were treated to beautiful light on the peaks across the lake, we headed farther down the road to our sunset destination—a spectacular view of the Humboldt Mountains (among others) above the lake. The sky looked especially promising for something special, so as we drove I gave everyone a quick primer on photographing a sunstar.

We pulled up to the vista just before the sun dropped out of the clouds. With just a few minutes until it disappeared behind the mountains, everyone scrambled out of the Sprinter (the 16-passenger Mercedes van that would be our chariot for the next 10 days) and set up. The sunstar window opened and closed quickly, but it was followed by a show of color and light that turned out to be a harbinger of upcoming good fortune.

I haven’t processed those images yet, so I’m sharing this one from the previous sunset, when I photographed a sunstar from the same location. (Honestly, the group got a much better sunset than this one.)

Why winter?

Ever since Don and I scheduled this workshop, I’ve had to answer the “Why winter?” question. Most photographers get it—not only does the lower sun angle make the light better, the mountains are covered with snow, and I’ve always felt that winter weather makes great skies. And a New Zealand South Island winter isn’t much different from the kinds of winters we get in Northern California and Oregon. During the four weeks we were in New Zealand, we dealt with lows in the 20s and 30s, and highs in the 40s and 50s—cold, but unlike the summer heat most of you endured while I was in New Zealand, nothing that couldn’t be easily handled with the right clothing.

Over the next few weeks I hope to share enough New Zealand winter images that I hope will further prove my point. Until then, below you’ll find a collection of winter images, from a variety of locations, for a little vicarious cooling on a hot summer day.

New Zealand 2019

A Winter Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

 

Search and Rescue

 

Gary Hart Photography: Winter Sun, Lake Tasman, New Zealand

Winter Sun, Lake Tasman, New Zealand
Sony a7R III
Sony 12-24 f/4 G
1/250 second
F/20
ISO 100

I’m five days into the first of two New Zealand winter photo workshops with my friend Don Smith. With such full days down under, it’s hard to find time to post, but I’m doing my best to keep up (and to keep warm). Today I’m in Fox Glacier watching a spectacular electrical storm from the fireside confines of our hotel’s lounge. Yesterday we enjoyed sunrise at the Wanaka Tree, the waterfalls and Blue Pools of Haast Pass, and a short hike through the Lake Matheson rain forest; tomorrow we’ll helicopter onto Fox Glacier….

Don and I arrived in New Zealand last Friday, and spent several days pre-workshop scouting in the Mt. Cook National Park area. Before going on, I should probably clarify what I mean by “pre-workshop scouting”—or more specifically, what I don’t mean. I don’t mean that I show up for a workshop a few days early and hope to find enough shooting locations to keep the group busy. All that work starts years in advance—I never schedule a new workshop until I’m completely comfortable with the destination. For me, comfortable means backup photo spots and backup-backup photo spots. I’m kind of obsessive that way. My worst workshop fear is losing a location to weather or road closures or erupting volcanoes (hmmm, I wonder what made me think of that…), I sleep easier knowing that if a spot were to go down, I have a quality replacement.

But plugging in a viable backup spot also requires a little last-minute knowledge that can often be gained with feet on the ground just a day or two before the workshop. So I always arrive early and run as many (all, if possible) of my workshop locations in advance.

For New Zealand, hitting every one of ten days worth of locations isn’t practical, but in this case Don and I have an advantage because we’ve hired a local driver whose business it is to know every nook and cranny of the South Island. Nevertheless, we came over early to see what the current winter has done (specifically, how much snow and water there is), to add to our bank of potential photo locations, and to get our eyes on a few spots in the Twizel area that were inaccessible on previous visits due to conditions. (Plus, it was a great excuse to spend quality photo time with spectacular scenery.)

But anyway…

Last Saturday Don and I were in Mt. Cook National Park. One photo spot that was inaccessible last year was Lake Tasman, a pristine glacial lake often dotted with floating icebergs. We found the trail to Lake Tasman short but steep, immaculately maintained in typical New Zealand fashion. The hike ends at a vista above the lake, with a visual payoff that’s more than worth any oxygen depravation. As I sized up the scene at trail’s end, a park ranger (or whatever they’re called in New Zealand) trudged up behind me and asked if I could help him out. He explained that he was searching for a missing young woman, but had just been notified via walkie-talkie that the woman’s boyfriend was having a severe panic attack back at the trailhead.

Since David (the ranger) was a search party of one at this point, he had to continue the search. He told me the man’s name was Julian, gave me a brief description, and asked me to check on him and reassure him that an ambulance is on the way. So before clicking a single frame, I found myself hoisting my camera bag back onto my shoulders and beelining back to the trailhead, about a half mile down the hill.

About 100 yards from the bottom, a young woman on her way up stopped me and asked if I’d seen the ranger. When I asked if this had anything to do with the missing person, she told me she was in fact the missing person, and that she’d just reunited with Julian and was trying to catch the ranger to let him know she was no longer lost. I told her what I knew, including where I’d seen David last, and that I would continue down the trail to check on her friend and let him know help was on the way if he still needed it.

I found Julian resting in a shelter at the trailhead and confirmed that he was doing better now that he’d reunited with Sophie. Soon another search and rescue person showed up—when I relayed the status to him, he was able to contact David and tell him to stand down, all is well.

But now Sophie was wandering around who-knows-where trying to locate David. So back up the trail I went to catch her. I briefly considered leaving my camera bag but decided if I was going to go all the way back up there, I at least wanted the option to reward myself with pictures.

On the trail’s final switchback I ran into Sophie and David descending the trail, all smiles. We chatted briefly and I got a quick summary of how Julian and Sophie became separated, Sophie’s wanderings, and how she had taken a minor fall but was uninjured (though she would need a new pair of pants). They learned that Julian was fine and the ambulance had arrived and been turned around. I’m not sure the outcome would have been much different without my contribution, both were nevertheless very appreciative (and I have a story to tell).

Time for a little photography

Crisis resolved, I soon found myself back at the Tasman Lake vista. Unfortunately, the sun had come out and chased away the great light that had greeted my initial arrival, but I decided I wasn’t going to let that stop me. Since it was impossible to create a shot that included as much of the scene as I thought was necessary without also including the sun, I decided to make the sun part of my composition by turning it into a sunstar.

I started with my Sony 16-35 f/2.8 GM on my Sony a7RIII, but soon switched to the 12-24 f/4 G so I could include more of the lake and nearby foreground rocks. I stopped down to f/20 to enhance the sunstar, and since I rarely shoot with the sun smack in the middle of my frame, I bracketed a few exposures to give me options at processing time. Like all my images, this is a single click—no HDR or other blending of multiple images.

Typical of most extreme dynamic range images, this one looked pretty awful on my LCD (nearly black shadows, nearly white sky). The bipolar histogram reflected these extremes, but based on what I saw I was pretty sure I’d be able to recover enough usable detail to save the image. Nevertheless, just to be safe (since I don’t usually feature a the midday sun prominently in my frame), I bracketed a few exposures and chose the one that worked best.

I suppose the lesson here is that rather passing on difficult conditions, sometimes it pays to make the best of the hand you’re dealt. My standard response to a scene like this is to enjoy the view and vow to shoot it again another day. But being (literally) halfway around the world with no other day guaranteed, I decided to search for something I could use. Armed with my great Sony a7RIII sensor, a reliable histogram, and the knowledge to read it, I was able to rescue my image in post and come up with something that works.

Stay tuned for an announcement of the 2019 New Zealand Winter photo workshop….

Workshop Schedule || Purchase Prints


A Sunstar Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

Don’t believe your eyes

Gary Hart Photography: Sunstar, Horseshoe Bend, Arizona

Sunstar, Horseshoe Bend, Arizona
Sony a7R II
Sony/Zeiss 16-35
1/4 second
F/18
ISO 100

One of the greatest benefits digital photography has over film is the ability it provides to check an image’s exposure at capture (when you can do something about it). But as photographers, we rely so much on our eyes that it’s sometimes difficult to accept that they’re not always right. We take a picture, look at it on the LCD, and decide whether or not it’s perfect without even considering that there might be a better way. But where exposure is concerned, there is indeed a better way.

That’s because every picture you click, whether raw or jpeg (but especially raw), contains more shadow and highlight information than the jpeg that appears on your camera’s LCD preview screen can reveal. Fortunately, our digital cameras give us a tool that tells us about that missing exposure info: the histogram.

Histogram explained

Simple Histogram: The shadows are on the left and the highlights are on the right; the far left (0) is absolute black, and the far right (255) absolute white.

A histogram is a graph of the tones in an image. While I imagine that any graph has the potential to evoke high school science trauma flashbacks, a histogram is really quite simple, simple enough to be read and interpreted in the blink of an eye. And not only is your histogram easy to read, it’s really the most reliable source of exposure feedback.

When an image is captured on a digital sensor, your camera’s “brain” samples each photosite (the individual pixels in the megapixel number used to measure sensor resolution), determining a brightness value that ranges from 0 (black) to 255 (white). Every brightness value from 1 to 254 is a shade of gray—the higher a photosite’s number, the brighter its tone.

Armed with the brightness values for each photosite in the image, the camera is ready to build the image’s histogram. The horizontal axis of the histogram has 256 discrete columns (0-255), one for each possible brightness value, with the 0/black column on the far left, and the 255/white column on the far right (they don’t display as individual columns because they’re crammed so close together).

Despite millions of photosites to sample, your camera builds a new histogram for each image instantly, quickly adding each photosite’s brightness value to its corresponding column on the histogram, like stacking poker chips—the more photosites of a particular brightness value, the higher its corresponding column will spike.

Reading a histogram

The version of a picture that displays on your camera’s LCD is great for checking the composition, but the range of tones you can see in your LCD preview image varies with many factors, such as the camera’s LCD brightness setting and the amount of ambient light striking the LCD. Most important, because there’s more information in captured than the LCD preview can show even in the best conditions, you’ll never know how much recoverable data exists in the extreme shadows and highlights by relying on the LCD preview.

It’s human nature to try to expose a scene so the camera’s LCD image looks good, but an extreme dynamic range image that looks good on the LCD will likely have unusable highlights or shadows. As counterintuitive as that feels, exposing an image enough to reveal detail in the darkest shadows brightens the entire scene (not just the shadows), likely pushing the image’s highlights to unrecoverable levels. And making an image dark enough on the LCD to salvage bright highlights darkens the entire scene, all but ensuring that the darkest shadows to be too black. In fact, a properly exposed extreme dynamic range scene (a scene with both bright highlights and dark shadows, such as a sunrise or sunset) will look awful on the LCD (dark shadows and bright highlights). The histogram provides the only reliable representation of the tones you captured (or, in your live-view LCD display or mirrorless electronic viewfinder, of the tones you’re about to capture).

There’s no such thing as a “perfect” histogram shape. Rather, the histogram’s shape is determined by the distribution of light in the scene, while the left/right distribution (whether the graph is skewed to the left or right) is a function of the amount of exposure you’ve chosen to give your image. The histogram graph’s height is irrelevant—information that appears cut off at the top of the histogram just means the graph isn’t tall enough to display all the photosites possessing that tone (or range of tones).

When checking an image’s histogram for exposure, your primary concern should be to ensure that the none of the tone data is cut off on the left (lost shadows) or right (lost highlights). If your histogram appears cut-off on the left side, shadow detail is so dark that it registers as black. Conversely, if your histogram appears cut off on the right side, highlight detail is so bright that it registers as white.

Managing a histogram

In a perfect world, when you see your histogram cut off on the left (everything cut off on the left is detail-less black), you simply increase the exposure until the histogram shifts right (brighter) far enough that no shadow data is cut off. And if you see your histogram is cut off on the right, you decrease the exposure until the histogram shifts left (darker) enough that no highlight detail is cut off. Problem solved.

But many scenes contain a broader range of light, from the darkest shadows to the brightest highlights, than the camera can handle. In these scenes you can blend multiple exposures that cover the entire range of tones, apply a graduated neutral density filter (to moderate the sky). When those options aren’t available or practical, I usually save the highlights and sacrifice the shadows.

While the general goal is to ensure that none of the tone data is cut off on the left or right side of the histogram, the exposure you choose for a scene is ultimately a creative choice that isn’t bound to the way the scene looks to your eye. Though I often expose my scenes to match the amount of light my eyes see, sometimes I decide to make the scene darker or brighter than what I see.

A picture is worth a thousand words

Trusting a histogram over a picture you can actually see requires a leap of faith. I can explain the concept until I’m blue in the face, but in my workshops the point doesn’t usually hit home without a demonstration. For example, the two Horseshoe Bend sunstar images below are from the same file—on the left is the way the picture looked when I captured it, along with its histogram; on the right is the same picture with just a few minutes of very basic processing in Lightroom and Photoshop (no plugins, blending, or any other elaborate processing).

If I’d have exposed this scene bright enough for the shadows to look good on my LCD (more like my eyes saw them), the highlights would have been hopelessly overexposed (white); if I’d have darkened my highlights enough to look good on my LCD, the shadows would have darkened to an unrecoverable black. I knew my best chance for capturing this high dynamic range scene with a single click was to ignore the LCD and trust the histogram.

Despite an image that didn’t look good at all on my LCD, the histogram on my Sony a7R II showed me that I’d captured virtually all of the scene’s shadows and most of its highlights. And because I captured this image in raw mode, I was confident that I had even more shadow and highlight information than my histogram indicated, a fact instantly confirmed with a rightward tug of Lightroom’s Shadows slider. With minimal processing effort, I was able to achieve final result you see here. (This is why landscape photographers are always begging for cameras with more dynamic range, and also why I use the Sony a7RII.)

Workshop Schedule || Purchase Prints


Trusting My Histogram

Click an image for a closer look and slide show. Refresh the window to reorder the display.

A National Park Secret

Gary Hart Photography: New Day, Grandview Point Sunstar, Grand Canyon

New Day, Grandview Point Sunstar, Grand Canyon
Sony a7R II
Sony 12-24 f4 G
12mm
1/8 second
F/18
ISO 100

America’s National Parks have always been busy in the summer, but in recent years the summer crowds have virtually overwhelmed many of our parks. Between gridlock on the roads, more cars than parking places, and hip-to-hip tourists at the vista rails, what was once an opportunity to commune with nature has become a survival of the fittest endurance test.

My solution has been to avoid the national parks in summer, but for many summer is the only time to visit the special locations they’ve longed to see for their entire lives. And the only thing worse than visiting Yosemite or Grand Canyon in summer, is never visiting them at all.

Though I can’t make the crowds go away, let me offer an experience-based suggestion that is guaranteed to enhance your national park experience: Sunrise. Or more accurately, the morning hours from about thirty minutes before sunrise until around two hours after sunrise.

For most people the idea of rising before the sun on a vacation is laughable, but therein lies the genius. If you can overcome the urge to be most people, you can enjoy America’s most crowded national parks, at the height of the summer rush, in glorious peace. You won’t be alone, but you’ll be savoring the day’s first rays with a microscopic subset of the park’s total visitors, kindred spirits who relish nature and solitude as much as you do, who speak softly, stroll slowly, and respect personal space.

About this image

As much as I try to leave the national parks to the tourists in summer, my desire to photograph the lightning and rainbows of the Grand Canyon’s summer monsoon leaves me no choice. A couple of days ago, Don Smith and I guided our photo workshop group out to photograph sunrise at Grandview Point on the always crowded South Rim. Grandview is one of Grand Canyon’s most popular spots, but leaving our hotel about 45 minutes before sunrise got us out there about a half hour before the sun, and long before the tourists had even hit their snooze button the first time.

There were just a couple of other cars in the parking lot, the same lot that in just a few hours people will be circling in vain for five, ten, even fifteen minutes. Having Grandview virtually to ourselves, the group was able to spread out and find their own view of the canyon without competing with the teaming midday hordes that most people experience there.

Along with a few other people in the group, I set up in front a concave sandstone rock with a view across the canyon to where the sun would soon appear. Because this is my first trip with my new Sony 12-24 f/4 G lens, I’ve been making a point to familiarize myself with it, so I twisted it on and went wide. With a clear horizon and relative dearth of clouds, I dialed my f-stop to f/18 to ensure a good sunstar when the sun crested the horizon, and composed a frame.

When photographing a sunrise, the advancing light makes it impossible to set the exposure very far in advance. In these rapidly changing conditions, I love my mirrorless Sony a7RII’s pre-capture histogram in my viewfinder—I just kept my eye on the histogram, dropped the shutter speed in 1/3-stop increments as the horizon brightened, and was ready to hit the ground clicking the second the sun appeared.

Grand Canyon Monsoon Photo Workshops

Workshop Schedule || Purchase Prints


A Grand Canyon Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

 

A star in the east

Gary Hart Photography: Yosemite Falls Sunstar, Yosemite

Yosemite Falls Sunstar, Yosemite (Sony 12-24 f/4)
Sony a7R II
Sony 12-24 f4 G
12mm
1/30 second
F/20
ISO 100

When Sony asked Don Smith and me to try out their new lenses, I immediately knew where I wanted to be in Yosemite with the 12-24 f4 G lens. After great success photographing El Capitan and Half Dome as I’ve never been able to before (okay, well there was that one time last year when I borrowed a friend’s ultra-wide lens), I was ready to go home. But before leaving, I decided to walk up to the bridge beneath Lower Yosemite Fall.

With my Yosemite Moonbow and Dogwood workshop starting in just five days, my goal this morning was more to see exactly how wet it is on the bridge than it was to take any more pictures, but I decided to take my camera anyway. On the way back I played with ultra-wide (12mm) vertical compositions of this scene. Still getting used to how much I can actually fit in my frame at 12mm, I flipped the camera to horizontal and was startled to find the sun in the right corner of my viewfinder. Startled because from my location, the top of Yosemite Falls is due north (0 degrees), and the sun at that time was at 125 degrees azimuth (35 degrees south of due east).

I quickly came to terms with this revelation and repositioned myself until the sun was behind a tree, dialed to f/20, composed, metered and focused, then clicked as the sun peaked out. For the next ten minutes or so I moved as the sun moved, keeping my lens right on the edge of the shadow.

I knew the sunstar’s highlights would certainly be clipped, but I wanted to give the shadows as much light as possible without losing the highlights in the waterfall. And as important as the histogram is in these scenes with brilliant highlights and dark shadows, I knew that it wouldn’t tell me the entire story. As I increased the light by lengthening my shutter speed, in my viewfinder (I love mirrorless!) I monitored both the shadow side of the histogram and the highlight alert in the fall. I know that shooting raw, I can increase the exposure a stop beyond where the highlight alert appears, but in this case I found that I only needed to add 2/3 stop before the histogram showed me that I had all the recoverable data in the shadows I needed.

A few words about sunstars

Sunstars can be overdone, but they’re often the best way to make something interesting in difficult light. When I find myself wanting to photograph a clear sky scene facing the sun, I often use the sunstar to add visual interest to a sky that is otherwise pretty boring. Often the sunstar makes an excellent counterbalance to another strong visual object. And while a sunstar isn’t exactly what our eyes see when we look toward the sun, I think it makes a pretty good substitute for the blinding experience of looking into the sun. Take a look at the gallery of images below and ask yourself how many of these images would have been as visually appealing without a sunstar spicing up the sky.

To capture a sunstar, use a small aperture (I usually use f/16 or smaller), remove any filters (to minimize flare), and place the sun on a hard edge with most of the sun obscured: the horizon, a cloud, a tree, a flower, and so on. The more sun visible, the bigger (and more blown out) the sunstar will be. As a general rule, I try to avoid too much sun. And since each lens creates a slightly different sunstar, it helps to experiment with different lenses to determine which ones work best.

I’ll be on my annual Grand Canyon raft trip, off the grid and unable to respond, until May 30

Workshop Schedule || Purchase Prints


A Sunstar Gallery

Click an image for a closer look and slide show. Refresh the window to reorder the display.

 

%d bloggers like this: