Hi Tom,
Finally had time to get back on this problem.
I’m using compressor, latest version and latest version of Mac OS: 14.1.2 and 4.7, with latest version of Apple’s Pro Video update. In FCP the system works fine, as far as I can see, but Compressor is still not reading the Canon XF-AVC Intra 422/10 400Mbps correctly! I’ve searched the forums and I think it’s been an issue for a while from what I see and not necc to do with Canon C300 MK II but also MK III.
The issue I think is that Compressor does not understand that the LOG3 file with Cinema Canon CLOG3, Color Matrix: Neutral, Color Space: Cinema Gamut, is captured in a color space that is well beyond 709 and even 2020, as graphs show above, and also that the Gamma is not standard.
I’ve managed to force it to behave correctly by applying an approx Gamma Correct of 1.12. The built in Canon LOG covertion files are useless, like being on magic mushrooms, if you apply Canon’s own correct LUT, in my case ‘CinemaGamut_CanonLog3-to-BT709_WideDR_65_FF_Ver.2.0.cube’ the all is good.
Please can we try and get the software developer to try and sort this out? I know Canon is so tight on profit margins that they could not be arsed to pay Apple for the ProRes license, to make life simple. Would have paid a hundred or so extra, for the ProRes license to be sure.
Regards, Charles.
PS I'm trying to get Compressor to convert Canon XF-AVC Intra 422/10 400Mbps, CLOG3, Color Matrix: Neutral, Color Space: Cinema Gamut to ProRes 422 HQ in LOG, no color conversion or gamma correction necc.
Photos to follow.