I’ve proven to myself (more than a few times) that I have the ability to (very) occasionally understand relatively complex concepts yet completely stumble over simple ideas. So I’m going to ask this very basic question Just To Confirm ™
Regarding the usage of two tone curves RawPedia says the usual practice is to “lower values using the first curve, and to raise values using the second one”. Visually that would generally look something like the first curve tends to sag downward while the second curve tends to bulge upward. More or less, right?
So are the two curves evaluated and then a resulting composite curve applied to the pipeline? Otherwise one would be applied serially after the other (and to the first curve’s result, not to the yet unaltered pipeline). Or is that the advantage of using two curves?
I understand – and don’t doubt – what RawPedia says, I’m just trying to grok why / how it’s better to use two curves. Is there some fundamental principal I’m missing? FYI, if you start pushing math my way I’ll probably try to politely disappear.
~2+ years ago I read (but very incompletely understood!) RawPedia pretty much in its entirety while playing with RawTherapee. I then pushed out of my brain whatever I learned by reading and playing with darktable. Now I’d like to get better with ART, so I’m trying to resurrect some of my lost RT / ART “knowledge”.
P.S. - Maybe I should just save and use this topic for additional Dumb Questions…