Canon EOS 20D, EF-S 10-22mm f/3.5-4.5 USM, Focal Length: 10mm, Aperture: f/3.5, Exposure: 10min, ISO100
I spent a cold March evening walking around the Yosemite Valley floor looking for a good spot to compose a decent timelapse photo before settling on this spot where the Northern celestial pole was directly behind the prow of El Capitan. There was almost a full moon that night putting out so much light that any exposures longer than about 15 minutes resulted in a whiteout. I came up with this image after spending about an hour experimenting with different ISO, exposure and aperture settings.
To see more night images of Yosemite Valley, click on the images below: