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| author | Carl Hetherington <cth@carlh.net> | 2015-06-29 23:40:29 +0100 |
|---|---|---|
| committer | Carl Hetherington <cth@carlh.net> | 2015-06-29 23:40:29 +0100 |
| commit | 5769392a51631355fff96854911700b85d98eae5 (patch) | |
| tree | 8e26b30302043f850ddff6ee8b06adf9bda27732 /src/gamma_transfer_function.cc | |
| parent | 93d06f01683ec7ad351db329627b02d4fb23f4fa (diff) | |
Return to DCP-o-matic v1's gamma correction for Rec 601/709.
Dennis points out that `there definitely *is* no right answer for
BT.709 gamma' and `your formula [the DCP-o-matic v2 gamma function
before this commmit] is what I'm calling the inverse of the BT.709
camera transfer function. The EBU would not have bothered to write:
"Therefore the monitor gamma is not, and never has been, the inverse
of the camera gamma." if no-one ever thought of using it'.
At least the 2.2 gamma of v1 should not surprise anybody.
Diffstat (limited to 'src/gamma_transfer_function.cc')
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