I have been using the OCIO SPI-VFX route, where you view through a film sRGB display LUT. So in a sense the primaries are viewed as sRGB... Or DCI is the other option. And I can jump between DCI and sRGB on my monitor.. Eizo CG245w.
I linearise through the 10 bit log conversion and comp there without changing primaries as the LUTs are supposed to give you a true sense of that neg scan... The other tool i use are the truelight LUTs, and I have one calibrated with my monitor ( thanks to film light) at Kelvin 5400 gamma 1.5 to mimic darker viewing surround. Well I'd be very keen to know if people have better solutions. I need to read up on aces ADX N Sent from my iPad > On 7 May 2016, at 19:53, Simon Björk <si...@bjorkvisuals.com> wrote: > > An interesting discussion is going on about color workflow for film scans in > the ACES loglin thread, but I thought I'd break this off as a separate topic. > > How are people treating "primaries" of a film scan? We have a number of ways > to linearize the scan, and where plog or the lg curves from Sony seems like > two good methods. But what about primaries? Yes, I do understand that it's > not really primaries in the terms of a digital camera, but just for > simplifying the conversation. Are people just using simple grades/saturation > nodes when comping for example cg renders into film scans, or maybe manual > color matrix matching from McBeth charts? > > ACES has the ADX colorspace that would work well, but this requires the > scanner to be properly setup. And at least the scanners I know of are not > calibrated for that. > > So I guess it's a very broad question but I was just curious how others deal > with this issue. It's of course also dependent of the film stock. > > I have always been interested in breaking out the matrix from the film > simulation ICC profiles that Adobe applications ship with. But these are > about ten years old and I would think a recent Vision3 stock would be a bit > different. But they also ship with a "Universal film" profile that might be > useful as a staring point. > > Thoughts? > > ------------------------------- > Simon Björk > Compositor/TD > > +46 (0)70-2859503 > www.bjorkvisuals.com > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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