PREAMBLE: I am very familiar with color managed workflow in general and in After Effects.
What is the correct method to set up a color managed workflow with Slog3/SGamut3.cine XAVC MXF footage in After Effects?
When I try to interpret footage on my Slog3/SGamut3.cine XAVC MXF source clip, the Assign Profile popup of the Color Management tab of the Interpret Footage dialogue is greyed out and fixed on Rec709.
How can one interpret the footage to be the correct source color space?
Failing that, what would be the correct way to apply Sony's SLog3SGamut3.CineToLC-709TypeA.cube LUT to the footage, given that the Rec709 incorrectly assigned to the clip has both different primaries and a different gamma than Slog3/SGamut3.cine color space?