thatcherfreeman / aces-transforms

Contains all the ACES IDTs and ODTs that I've made.

ACES Transforms

In this repository, I have made several IDTs and ODTs that can be used with DaVinci Resolve to add support for these cameras. In most cases, the IDT and ODT were based on the spec sheet provided by the camera manufacturer (this is the case when the spec sheet is in the specs folder). Otherwise, I have used some other method to create the transformation.

Support me at: https://www.buymeacoffee.com/thatcherfreeman

Current supported Log curves

IDTs and ODTs are provided for the following log curves/image profiles:

• Apple Log
• DJI D-Log
• DaVinci Intermediate
• Fuji F-Log
• Fuji F-Log2
• GoPro ProTune Native, Color Profile
• GoPro ProTune Native, Flat Profile
• Leica L-Log
• Nikon N-Log
• Phantom Log1
• Phantom Log2
• ZCAM Z-Log2

Installing ACES Transform DCTLs in DaVinci Resolve

Download the IDTs and ODTs folders. On Windows and MacOS, put their contents in the IDT and ODT folders located in the following directories:

(Windows)
%AppData%\Roaming\Blackmagic Design\DaVinci Resolve\Support\ACES Transforms\

(MacOS)
~/Library/Application Support/Blackmagic Design/DaVinci Resolve/ACES Transforms/

For example, place the Fuji F-Log ODT.dctl file in the following folder on MacOS:

/Users/<your username>/Library/Application Support/Blackmagic Design/DaVinci Resolve/ACES Transforms/ODT/

or on Windows:

C:\Users\<your username>\AppData\Roaming\Blackmagic Design\DaVinci Resolve\Support\ACES Transforms\ODT\

Once you've done that, restart Resolve and they should show up in the ACES Transform node and in the color mangement settings.

aces-transforms's Issues

Fuji F-Log2 specs are out, time to add them

spec sheet is here https://dl.fujifilm-x.com/support/lut/F-Log2_DataSheet_E_Ver.1.0.pdf

Typo in F-Log2 Constants

a should be 5.555556f instead of 0.555556f.

IDT and ODT

I'm using a few of the IDT and ODT's for some projects. I'm on Metal in DVR 18.1. on Mac OSX 13.2 I'm getting some errors unless I take out the top "DEFINE_ACES_PARAM(IS_PARAMETRIC_ACES_TRANSFORM: 0)" in the DCTL. Is that okay? It seems to work, but I wasn't sure what that line was there for.

N-Log 10 bit code value error

IDT/Nikon N-Log IDT.dctl

I noticed that in your N-Log IDT file, #line18, #line19, #line20 uses code value of 1024.0f, but 10 bit values ranges from 0.0 to 1023.0 right? So perhaps this is a mistake? I may be wrong, anyways just a heads up.

DaVinci Intermediate IDT/ODT CAT accuracy

Hi, Thatcher!
I found DaVinci Intermediate IDT/ODT DCTLs give some difference compared to using Bradford CAT from Chromatic Adaptation effect.

Also wouldn't using CAT02 give more expected results?

Here is more about choosing CAT method for DaVinci Wide Gamut: https://community.acescentral.com/t/aces-and-chromatic-adaptation-consistency/5217

These values give the perfect match with CST (which uses CAT02):

__CONSTANT__ float matrix[9] = {
     0.748270290270679f,  0.167694659549422f,  0.084035050222766f,
     0.020842123444419f,  1.111904742666049f, -0.132746866104714f,
    -0.091512257422527f, -0.127746712807242f,  1.219258970229265f,
};
// Used inverse of matrix from the IDT.
__CONSTANT__ float matrix[9] = {
     1.328323120016896f, -0.213523641303889f, -0.114799478824335f,
    -0.013160753845427f,  0.912865417908090f,  0.100295335979076f,
     0.098319230930014f,  0.079618463603444f,  0.822062305501921f,
};

Calculated using this calculator, that allows to choose up to 15 decimals, so maybe you'll find it useful.