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Canon 7D-brightness shifts even in Manual Mode
I have been shooting quite a few HD video (1080 30p) timelapses (I speed up the video) of clouds and sunsets/rises of late and I am continually noticing that there are dramatic shifts in what appears to be exposure even though the camera is locked in manual mode, ISO 100, Shutter 60, and F-stop locked. Here is a link, watch the shifts in “exposure”:
https://www.pond5.com/stock-footage/718522?pf_fullscreen=1
Any ideas?