For those of you still using Nuke6.2 or earlier but would like the new LUTs (AlexaV3LogC, PLogLin, SLog), here are the expressions from Nuke6.3v2:
AlexaV3LogC = (x > 0.1496582 ? pow(10.0, (x - 0.385537) / 0.2471896) : x / 0.9661776 - 0.04378604) * 0.18 - 0.00937677 PLogLin = pow(10.0, (x*1023 - 445)*0.00333333)*0.18 SLog = pow(10.0, ((x - 0.616596 - 0.03) / 0.432699)) - 0.037584 See "Altering a Script’s Lookup Tables (LUTs)" in the docs for implementation... -KenL
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