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Gamma shift problem with tiff-sequence

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Bill Nelson
Gamma shift problem with tiff-sequence
on Nov 13, 2008 at 6:12:45 pm

Hi everyone,

I got a tiff-sequence which I loaded into Apple Color. I chosed the Blackmagic 10 Bit Codec for render to generate a Quicktime. I got the same clip also on Digibeta which I loaded into Final Cut. When I compare my tiff-to-quicktime clip from color and the clip from the digibeta, I get this well known gamma shift.

I know that this problem occurs because the tiff-files a RGB and Color treats them with 1,8 gamma. (when I put a single tiff-file into final cut and set the gamma manually to 2,2 the frame is correct).

BTW - the gamma shift is not only on the monitor but also on my waveform monitor via blackmagic decklink extreme-SDI.

I really need a way to generate clips from tiff-sequences with the correct gamma.

Any help for me?

Thank you!

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Margus Voll
Re: Gamma shift problem with tiff-sequence
on Nov 15, 2008 at 11:35:45 pm


Open tiff's in Quiqtime Pro as one video file. Save it as mov. Use compressor to export is in a format you like and in export settings say that you have gamma 2.2. This is not a fine tuned work flow description but generally it should do it.

Play around with compressor.



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