ART and Sigmoid [solved]

[priort (Todd Prior)]

In DT this is what the latitude is for…you can introduce a strait segment to the curve and adjust the slope of that… the compression each way happens outside those boundaries… I think you can use the regularization a bit in ART for some local contrast but I think you have to add it back with a supplementary tone curve after to areas or a zone where you want contrast…

@micha

That sounds very interesting. But how do you go about selecting an area that you want to keep in contrast and sacrifice the others for it? Is there a special technique for this?

@agriggio

filmic applies also a “film-like S-curve” and some other look operators (e.g. saturation manipulation), whereas in ART you would do that afterwards with the tone curve