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D800 and Auto ISO strange behavior.......


Encino, US
395 posts

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InsaneO Registered since 09th May 2012
Wed 03-Oct-12 10:32 PM | edited Wed 03-Oct-12 10:35 PM by InsaneO

Yesterday I was shooting a theater rehearsal in a pretty dim environment. To get decent shutter speed I set on Auto ISO and -2 exposure compensation. High ISO limit was set at H-07. Since most of the action was in the spotlights I figured that background could go dark as long as I get sharp actors.
What I got is peculiar ISO numbers: 7184, 8063, 9051, 10159 among numbers like 2800, 3200, 5000 etc.....

I was changing shutter speed manually mostly from 1/100 to 1/200 at F4
depending on the action.
Just curios how I got these weird numbers.