MattSteeves wrote:Is there a way to automatically deconstruct a LUT into native adjustments? (curves, primaries, etc)
If you know what to look for, you could apply a LUT to an image, then grab that as a Gallery still, then start a new version, delete the LUT, and try to use the color-correction controls in Resolve to match the grade. In cases where there's unusual saturation curves and hue changes, it might be difficult to replicate, but you can at least get in the ballpark. It helps to actually use a color chart and see how the LUT is changing the chart on scopes, since the chart has absolute values you can quantify.
I'm known for slamming LUTs online, but I concede that technical LUTs have a real value, and there are cases where it's faster to just use the LUT, even if you have to place a Node before and after the LUT in order to prevent it from being too destructive. I just did an SLog3 project last week where I did use the stock SLog709A LUT to tame Sony's color science to something normal. There's also value in using a Color Space Transform Node in order to pull the camera into something close to Rec709 for final color.
Of course, if the post supervisors are using a Show LUT and demand that it be used at every step of the post process, then I think the best course is to use it. We always offer them the option of letting us match it, and I think we can generally get within about 5%, given enough prep time (and assuming there's only a half-dozen or so LUTs).