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Ilya Osovets
on May 18, 2011 at 7:44:28 pm

I know this has been asked quite a few times but I dont think I ever found the right answer...

When converting a file from a Cannon 5D H.264 to ProRes. Why does the image get darker?

I understand that there is a gamma shift when doing this conversion and I wanted to know if there are any side effects if one is to change the gamma in compressor from 1.00 to .70?

When I do this, it brings the image back up to a nice bright color.

However, I'm worried that by doing so I might be lossing information that will be critical in the color creation stage of the cut.

Any thoughts?

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Craig Seeman
Re: Gamma
on May 19, 2011 at 2:12:58 pm

The issue many face is that heavily compressed H.264 (AVCHD) has relatively limited room for color grading before various artifacts become visible. A setting was recently released for Canon DSLRs which would result in a "flat" recording allowing for a little more "wiggle room" for grading.

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