Has it been confirmed that smartrange+ is an auto setting or a static setting? when letting the camera choose exposure I noticed it want's to increase shutter speed or aperture, apparently to make protect highlights.
I tried it with very similar setting of footage I had. The first LUT didn't increase brightness. Maybe it's an exposure thing, do you expose to 0?
How did you make the LUT from the .srw?
I know it's possible to make a .dcp but I don't know how to convert the .dcp to a .cube.