Hey Dennis,
The DCTL is supposed to be added as an ACES IDT, it’s not set up to be loaded as DCTL in the node tree.
Windows:
C:\Users\ [your user folder] \AppData\Roaming\Blackmagic Design\DaVinci Resolve\Support\ACES Transforms\IDT
Mac:
~/Library/Application Support/Blackmagic Design/DaVinci Resolve/ACES Transforms/IDT
You can then load an ACES Transform node and find the color space at the bottom of the list.
Regarding your setup you have other inconsistencies as well.
If you decide to grade in an ACES pipeline I would recommend also grading in ACEScct. For manual colormanagement this means setting your timeline to ACEScct, not DWG/Intermediate.
- ACES Transform: Fuji FLog2 to ACEScct
- Grading
- ACES Output Transform ACEScct to Rec.709.
If you don’t care about the ACES workflow but just want to use the IDT for conversion you can stay in DWG/Intermediate. Leave the timeline to that but your data needs to be DWG/Intermediate as well. Otherwise your color space aware tools aren’t behaving as they should.
This would be:
- ACES Transform: Fuji FLog2 to “No Output Transform” (AP0/Linear)
- CST: AP0/Linear to DWG/Intermediate, no tone mapping, chromatic adaptation on.
- Grading
- CST: DWG/Intermediate to Rec.709/Gamma 2.4, DaVinci tone mapping, forward OOTF checked
The extra step at the input stage is necessary because DWG/Intermediate is not yet present in the ACES Transform list in Resolve.