New Sigmoid Scene to Display mapping – #763 by st.raw – darktable

Yes… sort of anyway. My approach (not saying it’s ‘correct’) with sigmoid is to set the sigmoid contrast and exposure where to get the amount of ‘punch’ I want, then go to tone eq and bring the highlights down and shadows up as needed.

It’s different to a filmic approach, but I actually find that I usually need to do very little in colour balance rgb with this approach. At least partly cos sigoid in the default ‘per channel’ mode (all I use) increases saturation with contrast, which I find quite intuitive.

BTW, I’m not sure whether it’s just to do with my perception somehow, but I don’t seem to need to add local contrast nearly as much with approach. I think maybe it’s because the tone eq guided filter is ‘preserving’ on a local level the contrast I add with sigmoid…