Dawn light gently lights the morning clouds about San Francisco Bay haze and Alcatraz island.
After photographing the lunar eclipse over the Golden Gate Bridge – along with many hundreds of other photographers – I stuck around and turned my attention to other subjects, too. As sky began to lighten with the approaching dawn, and the eclipsed moon sank into the high clouds and generally murky atmosphere over the Pacific coast, I began to see other photographers look around and notice other elements of this urban landscape. But, surprisingly the larger number simply packed up their gear and left as soon as it became hard to see the moon!
I was quite surprised, to say the least. One one hand, it was something to see that so many photographers and other viewers had gotten up at a very early pre-dawn hour just to assemble and together watch this celestial event. On the other, once along the shore of this beautiful bay at sunrise on a mysteriously hazy morning, I’d expect that they might want to look around and try to sustain the experience. (OK, it was cold. They probably wanted coffee. And breakfast. But, still!) In any case, within a surprisingly short period of time, where people had been lined up almost tripod-to-tripod a few minutes earlier, there were few at all left to see the sunrise color come to the high clouds above the bay, here with the misty shape of Alcatraz along the horizon.
G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more. Blog | About | Flickr | Twitter | Facebook | Google+ | 500px.com | LinkedIn | Email
Glacial erratics rest on top of a low granite dome in the back-country of Yosemite National Park.
“Erratics” are boulders left behind in the wake of the passage of glaciers, and left behind when the glaciers disappeared. They are found all over the higher elevations of the Sierra Nevada and some of the most striking examples are found in surprising places – like along the top of this granite dome-like ridge in the Yosemite back-country along the Tuolumne River. After spending decades in these mountains I sometimes take these rocks for granted (and for “granite…” ;-), but every so often it hits me just how strange and wonderful it is to find these large boulders sitting in unlikely places.
I made this photograph in the late afternoon as the lowering sun began to cast longer shadows and as earlier clouds began to dissipate above the distant ridges. The Tuolumne River begins it steep descent into the lowlands between my position and the distant ridge covered with granite and trees.
G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more. Blog | About | Flickr | Twitter | Facebook | Google+ | 500px.com | LinkedIn | Email
Early light on morning clouds above the Tuolumne River Canyon below Glen Aulin, Yosemite National Park.
This is the same bend in the Tuolumne River, located below Glen Aulin and before the river descends toward Waterwheel Falls and eventually the abomination of Hetch Hetchy Reservoir, that was shown in a photograph of late afternoon light that I posted here a few days ago. This time it was early morning. We had been up well before sunrise and had wandered off in various directions to find early morning photographic subjects. My main goals were the cascading water along the edge of this section of the river (a bit of which is visible in the lower portion of the frame) and a granite bowl to the right of this view. As I came over the rise above this area before descending I saw the beautiful sparse clods to the west, probably extending to the edge of the Sierra and still with pastel colors from dawn light.
A technical observation about this photograph. This scene presented a technical challenge in the form of an extremely wide dynamic range between the bright and red-saturated first direct sunlight on the ridge at upper left and the much darker areas of forest in shade along the river and in the foreground. With a digital exposure, in a scene like this one, the primary rule for me is “don’t blow out the highlights.” If I had overexposed the sky the clouds would have turned into pure white, texture-free blotches and that bit of early sun on the rocks would have lost detail and taken on a very strange coloration. However, an exposure that protects the highlights in a scene like this one can leave the shadows nearly black. While it is possible to “fix” that a bit in post, the result is not necessarily very good when the dynamic range is very large. One “traditional” solution would have been to use a graduated neutral density filter (or “GND”) that blocked some of the brightest areas at the top of the frame while not affecting the lower 2/3 or so. But I don’t use them, and in this case the result would not have been totally wonderful since the same filtering that would reduce sky brightness would also make the large granite dome at the right end up nearly black at the top.
So instead of filtering at the time of exposure, I decided that I would use the roughly comparable, but more flexible, “exposure blending” techniques in post. With that in mind I made several photographs at different exposures – some at shorter shutter speeds to avoid the blown out highlights and others at increasingly slower shutter speeds to reveal the shadow detail that my eyes could see but which the camera otherwise could not. During the post-production phase, I selected two of the exposures, one that was as bright as possible but without blowing out the sky and sunlight, and the other two stops lighter to reveal that shadow detail in a way that seemed consistent with what I recall the scene actually looked like. The two source images were carefully adjusted during raw conversion and their two layers carefully aligned. With the darker image (the one with the “good” sky) on the top, I began to “paint” out the mask to reveal the details of the foreground forest, river, and rocks. (In answer to the expected question, this is not the same as HDR. That is a more or less automated process that works in a different way. Exposure blending is typically a manual process that relies a great deal on the photographers judgment and recall of the actual scene.)
G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more. Blog | About | Flickr | Twitter | Facebook | Google+ | 500px.com | LinkedIn | Email
Three glacial erratic boulders atop a granite dome near Glen Aulin, Yosemite National Park.
Looking for something to photograph one evening during my September back-country photography trip into the Glen Aulin and McCabe Lakes area of Yosemite National Park, I climbed up from our camp site to the top of this small granite dome or “whaleback” above the valley of Glen Aulin. The dome is merely the most open and exposed portion of a ridge of more durable rock that rises a ways up the slope from near where we were camped, and from its “summit” I had a 360-degree panorama of the surrounding landscape as the day came to an end.
When I first arrived at this spot more than an hour earlier, the sky was almost completely clouded over. This was one of those situations in which the immediate photographic prospects seemed quite limited, with gray skies and murky atmosphere, but with some potential for interesting things to happen if the clouds thinned as sunset approached. So I decided to stick around in this spot rather than wandering around looking for something else, and in the end the clouds did thin. Before I made this photograph, one of the last of the evening, I had managed to find a range of subjects as the light changed: the light from breaks in the clouds began to move across a forest to my right and light a small prominence nearby; light coming over the ridge at the far right back-lit some haze behind trees on a lower ridge that was closer to me; and finally the remaining clouds took on a bit of color right as the sun dropped below the horizon.
G Dan Mitchell is a California photographer whose subjects include the Pacific coast, redwood forests, central California oak/grasslands, the Sierra Nevada, California deserts, urban landscapes, night photography, and more. Blog | About | Flickr | Twitter | Facebook | Google+ | 500px.com | LinkedIn | Email
