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cameramanben / LUTCalc

Web App for generating 1D and 3D Lookup Tables (LUTs) for video cameras that shoot log gammas.
http://www.lutcalc.net
GNU General Public License v2.0
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3D LUTs for DaVinci Resolve have the domain set incorrectly #7

Closed balazer closed 6 years ago

balazer commented 6 years ago

When LUTCalc is set to generate a 3D LUT and when LUT Type is set to DaVinci Resolve 12+ auto (.cube) or DaVinci Resolve (.cube), setting Input Scaling Max to a value other than 1.0 causes LUTCalc to write an incorrect domain keyword in the output LUT file.

The LUTCalc .cube file will contain lines like these:

TITLE "Custom LUT" LUT_3D_SIZE 65 LUT_1D_INPUT_RANGE 0 1.095 # S-Log3/Passthrough -> ACEScc/Passthrough, CineEI Shift -5.00, Black Level -35.84% IRE, Input 100% -> Output 100% - Created with LUTCalc v3.1.1 by Ben Turley June 2017

The LUT_1D_INPUT_RANGE keyword is not valid in a 3D LUT. DaVinci Resolve will ignore that keyword. (Tested in DaVinci Resolve 12.5) The correct keyword is LUT_3D_INPUT_RANGE.

nick-shaw commented 6 years ago

LUT_1D_INPUT_RANGE is a valid keyword, but only if the LUT includes a 1D (shaper) LUT. Then another line such as LUT_1D_SIZE 4096 is needed too. Resolve supports .cube files containing 3D LUTs only, 1D LUTs only, or a 1D LUT followed by a 3D LUT. Each can have a domain declared if necessary.

cameramanben commented 6 years ago

Oops! Surprised this one has managed to slip by for so long. Thanks for the heads up and I'll get on to the fix,

Ben

cameramanben commented 6 years ago

Should now be updated with the fix. Ben