I don't believe that using color space transform actually normalizes log footage, or that it was meant for that purpose.Ĭan't speak to using ACES in Resolve with UM4.6k footage, but it doesn't work well in my view with BMPCC footage. The simplest way to normalize footage is to put one of the supplied 3ds lut on the last node of the grade, for converting UM4.6k film (log) to rec 709.
This should give you a fairly neutral starting point (with any further adjustments made in previous nodes). Use color space transform in Ofx to convert BMDfilm to more common color space and LOG gamma, for example to REC 2020 with Cineon gamma. Input gamut: rec2020 or any other wide gamut you prefer (you need this conversation because native BMDfilm input color space is missed in LUTCalc) input gamma: Cineon or BMDfilm (i prefer work in Cineon gamma) Use custom generated with LUTcalc to compress color space and LOG gamma without clipping. output gamut: LC709 (actually i prefer Amira709 but some time ago Alexa-X-2 and Amira709 gamuts where temporary removed from LUTCalc) output gamma: Alexa-X-2, Amira709 (developed by Arri) or LC709 (developed by Sony) If final image too dull or black is too clipped you can experiment Input/Output Range:Legal/Data, but most time its ok to leave it as is.
This generated LUT will compress all tonal and color information without any clipping.
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