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XT-3 F-log to Scene Linear

wuzelwazel

By wuzelwazel
in Fuji X-T3 / Fuji X-T30

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wuzelwazel Newbie

wuzelwazel

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Hello all, I'm a relatively new owner of an XT-3 and I'm loving it so far!

In addition to the general usage of family photos that this camera is going to get I'm also very interested in capturing scene linear data for my creative 3D endeavors. I've gone over Fuji's F-log datasheet and used an expression node in Nuke to create a conversion from the raw f-log values into scene linear. The issue I'm having is that I often find negative values in the resulting scene linear image. I've attached one of the LUTs I produced from this method and you'll notice that there are several places where negative values are produced. This seems unexpected.

Has anyone else looked into conversion of F-log to scene linear?

flog_to_acescg.cube

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