Hank – Page 24

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November 23, 2014November 23, 2014

7D Mk II High ISO Performance

Last week I went out in the evening to run my new 7D Mk II through its paces with bird photography (most likely my primary use for this camera). Since my mind was in test mode, I decided to stay out after sunset (much later than normal for bird photography) to see how the camera performed in low light situations. I left the camera in auto-ISO mode to let it decide how high it needed to go. About a half hour after sunset, I was packing it in and heading back to the car, when I saw this blacktail jackrabbit eating from a patch of grass.

A blacktail jackrabbit ventures out into the grass just after sunset, Redwood Shores, CA.

I was a bit skeptical that anything would turn out given how dark it was. Not even sure if the auto focus would be able to work well in the darkness, I splayed out my tripod legs and got very low to the ground. Auto-focus seemed to be tracking well, so I started firing off bursts of shots, not really paying attention to the ISO. I knew it was high, but I wanted to see how high the ISO could go and still produce a usable image. This was highly dependent on the noise produced at high ISOs, and the amount of reasonable noise reduction I could perform in post processing.

The image above was shot at ISO 25,600! While I realized this produced far too much noise for a large print, it seems to be perfectly usable for web-sized images. You can also see here that the auto-focus was extremely accurate, even in low light.

So how does this translate into changes in the way I photograph? Nothing, really – a shot with this much noise is more of a curiosity than any hard data with which to change my workflow. However, let’s look at another example at a more reasonable ISO.

A hermit thrush pauses briefly on a branch in the last night of the day, Redwood Shores, CA.

I photographed this hermit thrush a little earlier in the evening than the jackrabbit. It was around sunset, but the sun had already set over the coastal mountains, so the light was certainly waning. Because of the extra light, the camera chose a more “reasonable” ISO of 5000 for this shot. But still, ISO 5000 is very high!

With my previous camera, ISO 1600 was really pushing the boundary of acceptability, with only about 50% of those images being able to hold up to the noise level. After running noise reduction on this image however, it became clear that images shot as high as 5000 ISO would be usable for many circumstances. This probably still wouldn’t hold up for a 16 x 20 inch wall print, but would most likely do fine for editorial use.

Finally, in order to show how smooth the images really are at ISO 800, I’ve included a shot of an anna’s hummingbird, followed by the 100% crop of its head.

An anna’s hummingbird perches on a thin branch, surveying the landscape, Redwood Shores, CA.

A 100% crop of an anna’s hummingbird. At ISO 800, the Canon 7D Mk II performs with amazingly low noise.

With previous cameras, I’ve always used ISO 400 as my standard starting point, moving up and down the range as light would allow. But with the 7D Mk II, I will likely start shooting at ISO 800 most of the time. I’ve run a slight amount of NR on the hummingbird shot, but the noise is so low that I’d rather have an extra stop of light to play with and get faster shutter speeds than feel the need to drop down to a lower ISO.

November 21, 2014November 21, 2014

When reality is too crazy to print

Those of us who have spent a good deal of time in nature have probably witnessed a few moments of pure magic when weather, light and other natural forces converge to create unforgettable events. I have had several such experiences, some of which I’ve been fortunate enough to have had a camera ready to capture them. When I see it in person, I’m often awe struck at the magnificence before me. But many times when I get home and process the resulting photos, I realize that I’m going to have some explaining to do. Sometimes the colors and lighting are so striking and unusual, that the resulting photo looks completely fake. This is especially true in this modern world of extreme photo manipulation capabilities.

But what to do in such circumstances? I certainly don’t want to de-saturate and alter the unusual colors so that the scene looks more “natural”. That is like saying these lighting events never occurred and what I witnessed should have looked like any other day. Instead I process the image so that the result matches my memory and add some written descriptions to allow the viewer to understand what they are seeing. So without further ado, here are three “crazy” lighting events and the resulting photos.

Dramatic light bursts from behind the Tetons at sunset. Thick smoke and haze from nearby forest fires create God beams as the sun drops behind the horizon, Grand Teton National Park

We’ll start with one of the most unbelievable sunsets I have ever seen. I was with some friends on a photo trip in Grand Tetons National Park a couple of years ago to photograph wildlife and fall colors against the spectacular backdrop of this mountain range. Smoke from nearby wildfires somewhat hampered our efforts early in the trip, but it also lent a special atmospheric quality to the otherwise clear skies.

The sun set behind the notch in the mountains, and we waited. Finally, it peeked out underneath the clouds on the horizon, cutting through the lingering smoke and turning the sky into an unbelievable magenta. In post processing, I kept finding myself wanting to desaturate or change the sky color, but finally I just left it as is. That is how I saw the scene, so I have to trust the colors.

Mt Wilson and the Wilson Mesa glow a light magenta under a cloud that catches the morning light.

The next example is from a recent fall color photography trip (notice a pattern here?) that I took to Colorado. Standing just below Last Dollar Road and looking out over the Wilson Mesa, I waited for what the sunrise would bring. The morning did not disappoint, and the clouds over Mt. Wilson lit up a beautiful orange. What was strange about the scene though, was that the entire landscape was cast in a similar orange, as if the color from the clouds on the horizon was emanating out in all directions.

What I realized later was that directly above me was a similar cloud catching similar light. It acted as a giant diffuser, coloring the grass, trees, and mountains in that same orange tint. Again I found myself tempted to remove the color cast, but again, that glow was real, and that is exactly how the scene looked that morning.

Clouds explode with light over the multi-colored rock at Zabriskie Point, Death Valley National Park

This sunrise was really spectacular. Given that I was shooting at a popular roadside pullout, the sky really saved the shot here and made it unique (which is why I emphasized it so much in this photo). The bright pink/magenta color continued to get more and more intense as the sun rose behind me. This was one of those moments when the heart starts beating faster and I can feel the blood pumping. I knew I had just seconds to capture the shots I wanted while this phenomenon remained. In all, within 30 seconds it was gone.

As I look back on these shots I see wild colors and unreal looking landscapes. I’m not sure if I’ll ever print any of these, because they look processed beyond reality. But looking at these photos also reminds me of some amazing moments that I’ve witnessed first hand. I wouldn’t trade them for anything.

November 7, 2014March 23, 2019

Strive For Separation

Thick fog shrouds a forest of aspen, Ridgway, Colorado

One goal of nature photography is to take the chaos of a wild landscape, and using nothing but the perspective of the rectangle of your camera’s view, to simplify and distill the scene into a singular message. One of the most chaotic environments in which I shoot regularly is a forest. Once you combine tree trunks, branches, leaves, and vegetation, you are often presented with quite a mess of a scene. Finding patterns and removing the extraneous elements can be a huge challenge.

One technique I use to help the viewer see the intended patterns I am trying to convey is to use and pay careful attention to the separation of the main elements of my photo. Here are several forest scenes that I shot on a recent trip to the San Juan mountains in Colorado. With each, I spent a great deal of time in the field moving the camera and field of view to just the right location, to make sure the trees were not merging with each other in ways that detracted from my vision.

Bone white aspen trunks create abstract lines over distant fall foliage, Ridgway Colorado

When I took this photo, I was in a location with a dirt road running along one side of a narrow valley. The opposite side of the valley was covered with a kaleidoscope of fall colors – a beautiful display. Above the road on my side of the valley was a stand of aspen, with perfect bone-white trunks. I knew the shot I was looking for – now it was a matter of hoping I could find the right composition.

I moved up the steep slope and into the aspen grove. Using a medium to long lens and moving up-slope above the trees, I could shoot straight through a select group of trunks, using the beautiful colors from the other side of the valley as my backdrop. Now was the truly challenging part – I needed to find just the right group of trees that showed a consistent pattern of separation from one another. I finally found some good candidates and spent a while getting my tripod into the right location. Working on such a steep muddy slope made the work slow and arduous. I slipped more than once, preferring to let my clothes take the brunt of the mud rather than my expensive gear.

In the photo, you’ll notice that the spacing between the left and right edges and the left and right most trees is the same. I tried to keep similar spacing between each tree, so as to repeat this pattern across the frame. The trouble trees are the three right most; but after working with them a while, I began to really like how they broke the perfectly even pattern. It brings just a touch of wildness into the photo, hinting at the chaos of this forest.

Thick fog shrouds a forest of aspen, Ridgway, Colorado

Another great natural phenomenon to take advantage of to help simplify a scene is fog. This can work especially well to simplify a forest scene, and it worked very well with aspen. Again, I worked on creating an even spacing across the closest trees, knowing they would be rendered in the photo with the most contrast. With these photos, it is especially important to pay very careful attention to the edges of the frame.

Fallen aspen leaves carpet the forest floor casting the trunks in a golden white

This last photo was perhaps the most difficult of the three. I saw the foreground cluster of trees, and as I moved closer, I saw a repeating cluster in the background, a perfectly placed V shape in the similarly shaped void between the right most tree and the trees to the left of the frame. However, seeing it and shooting it were different beasts. Instead of using my perspective to flatten a three dimensional scene across the frame as in the previous two photos, here I was using the shapes to accentuate the depth of this pattern.

Once I got the tripod and camera in place to get the background cluster of trees where I wanted them, I spent time working on smaller separations appearing in the left most cluster. Some of the trees I could stack on top of each other and hide from the camera’s view-port, but there was one distant tree that kept creating problems. Finally, I got into a position which put the distant tree into a spot that prevented it from peaking out from behind the foreground trees, and I knew I had it.

Although I was working with depth in this photo, the goals were the same as the previous photos: to simplify the chaos of nature into a digestible, understandable subject. Paying special attention to control the spacing between primary elements in the photograph can help achieve this goal.

November 5, 2014November 22, 2014

Bird Photography With The Canon 7D Mk II

A great blue heron stalks fish in still shallow water, Belmont, CA.

I spent about an hour this morning doing some bird photography with my new 7D Mk II. My primary use for this camera will be birds and wildlife, and I found and photographed some of the usual suspects around my home. This is not meant to be a formal review by any means, but I wanted to share some of my first impressions.

A black-crowned night heron perches above water in pre-dawn light, Belmont, CA.

Aesthetics

Before we get to performance, I have to address how the camera felt out in the field. It was a real joy! The build quality is solid and the camera was extremely responsive and accurate. Ergonomically, the buttons are laid out well, and I can tell a lot of thought went into designing the UI. The number of settings on this camera can be daunting, but almost everything can be customized to suite your exact photography needs.

A golden-crowned sparrow perches atop an ornamental bush, Belmont, CA.

Auto-focus

Obviously auto-focus capabilities are one of the headliner features for this camera. Canon’s new auto-focus debuted on their flagship pro body, and have been filtering down to less expensive cameras in the last couple of years. I haven’t tried out the myriad AF algorithms available (I’ll do further testing with these using birds in flight), but I can say that auto-focus was fast and accurate. Almost everything I captured was tack sharp. I’ll be setting up the camera with different AF settings depending on whether I’m photographing stationary animals or birds in flight.

A blacktail jackrabbit pauses in the morning light to watch for predators, Belmont, CA.

Noise Performance

As the sun was rising, I shot mostly at ISO 1600, gradually dropping down to ISO 400 as the day got brighter. At ISO 1600, there is still some noise visible in the shadows, but it was easily corrected in post processing. I found very clean shadows at ISO 800 and below. With my previous camera (7D), my starting ISO was usually 400 and I’d go up from there if the situation demanded it. Based on the performance of the Mk II, I will probably do most bird photography at ISO 800, giving me a full stop of extra light to play with in most circumstances.

A great blue heron is reflected in still water in early morning light, Belmont, CA.

Frame Rate

Shooting at 10 frames per second felt awesome. Even though I’m used to 8 fps with the older 7D, the incremental speed boost was noticeable. While I didn’t have any action situations that called for this speed this morning, having that capability was reassuring. With the large buffer, I never hit any card write delays, even though I was shooting with a slow card.

A black-crowned night heron stands on a buoy, watching for fish, Belmont, CA.

Silent Shooting

At one point, I crept close to a black-crowned night heron and began to fire off 10 fps bursts (mostly just for fun). The chatter of the shutter was loud enough to get his attention, and he stared at me, looking a bit anxious. I then remembered that the camera features a silent shutter mode (it applies extra dampening to the shutter mechanism so that it is very quiet). I set the camera to silent burst mode. This reduces the fps from 10 down to what felt like 3 or 4 fps, but it was nearly silent! I continued shooting photos of the now comfortable bird. This feature will actually be very helpful for getting close to some of the more sensitive wildlife – a nice little bonus.

A greater yellowlegs is reflected in shallow still water, Belmont, CA.

Overall Image Quality

So far, the results are fantastic. One caveat is that at the time of this writing, Adobe does not yet support the camera’s RAW files, so I had to use Canon’s software to convert to tiff before processing them in Lightroom. I’m sure I’ll get better results once I can process the RAWs directly with Lightroom, as Canon’s processor seems very poor. But the images are sharp, and the tones are pleasing. Auto white balance seems accurate. If anything, it seems that the Mk II overexposes a little more than the 7D, but I’ll get a feel for where the exposure compensation needs to be for various lighting conditions as I use the camera more.

Of course, the camera also has some goofy crowd-pleasers like multiple exposure and in-camera HDR. While I wont be using these for any serious work, they can be fun to muck around with if you’re bored.

A black-necked stilt fishes in shallow water, Belmont, CA.

Overall, this is a fantastic camera, and I had a very enjoyable first time out with it!