I am starting on a show that has been shot Alexa Log C. Most of the effects are TV/Computer screen replacements shot green screen, the inserts are either graphics (SRGB) or video (Rec 709). Most of the work has to be done prior to grade so…..how are folks dealing with the various LUT’s that need to operate if I am do deliver Log C profile back to grading. I am frustrated because when I make what I think is a sensible pipeline and then apply the reverse to check my results things don’t look the same.
On top of this the Alexa material does not behave as I would expect in relation to keying. It is noisy and slow to work with in terms of getting a perfect result, perhaps LUT’s are confusing the issue but I have done thousands of green screen shots without these difficulties.
Any thoughts would be deeply appreciated.
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