Sunset on the Sweetgrass Hills

My previous blog featured a still frame from a time-lapse movie I took of sunset on the Sweetgrass Hills and Writing-on-Stone Provincial Park. Here’s the full movie, taken at sunset on July 22, 2011.

I assembled the movie in Photoshop Extended CS5 from 678 frames taken over nearly an hour, at 5-second intervals, beginning before sunset and continuing until well after sunset. The camera was the Canon 7D and lens the 10-22mm lens at 10mm.

Putting the camera into automatic Aperture-priority mode keeps the exposure uniform as the lighting level drops but does induce some slight flickering from minor shot-to-shot variations in exposure. That can be fixed in “post!” But it’ll be a while before I get around to that!

— Alan, July 26, 2011 / Image © 2011 Alan Dyer

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