Hey there,
A few months ago, I wrote to VisionResearch to see if they could shed some light on their ACES workflow. I’d recommend contacting them directly to see if things have changed, but IIRC, PCC provides a couple different rendering options — “gamma”, “log1”, and “log2” I believe. We were instructed to use “gamma” mode, and manually set the actual gamma value to 1.0. (I think there might be a “tone map” or “lookup table” option as well — that should probably be turned off, but I can’t recall if it actually does anything to the transcode).
Two caveats, though:
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Depending on how the footage was shot, there’s a very good chance the sensor clipped values above 1.0. At least, that’s been my experience, pretty consistently.
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The transcoded linear values are not mapped to AP0 primaries; they’re “camera-native”… so, effectively undefined as of yet.
If anyone has more / better / updated info, please do share…