Hello. I think the problem is in the ARRI LUT Generator. With the standard parameters it doesn't make correct LUTs.
I have the same problem - very noisy image in Da Vinci and After Effects with LUTs from ARRI LUT Generator.
You can generate good LUT for Da Vinci by this way:
1) Use "Advanced" bookmark
2) Set "Source Gamma = Log-C"
3) Color Space = None (1D) - !!!!!!!!!
4) Destination Gamma = Video
5) LUT Parameters = 3D LUT Forced
6) File Format = Da Vinci Resolve
It looks very strange, but it works. You will have good and clean ProRes images from Your SxS cards.
If You could compare these Da Vinci grades with FCP Glue Tools Log-C->Rec709 plugin You can see very little less saturation in Da Vinci with LUT. But it looks fine.
It works!!!
But the main problem is the impossibility to make Your own Look file for Alexa playback on the set and use it further as the LUT in Your posproduction.
You can use ARRI Look Creator for this. And after shooting You can convert Your Look file to the Da Vinci LUT by the ARRI LUT Generator.
But really it doesn't work - the image will be very noisy again!!! Because in the bookmark "Look" (ARRI LUT Generator) You can upload Your Look file to convert to the Da Vinci LUT.
But You can'c choose "None(1D)" in the "Color Space"!!!
I don't understand what's wrong? Can somebody explain me how to use it?
