Not quite sure I understand the levels adjustment panel in Photos. I understand the typical curves dialog, because I understand which axis is input and which one is output and how any given curve impacts the image. Thus I understand how the common S-curve works. But the levels dialog, is the top line “input” and the bottom line “output”? How would I move the first-quarter and third-quarter anchor points to mimmick the standard S-curve” I’m assuming pull the bottom anchor points both closer to the middle? Or is it closer to the ends?
I’m trying to mimmick my default Aperture import preset, which includes a mild S-curve which I want to get reasonably close to replicating with Photos.
And yes, still pissed Apple doesn’t allow me to define a custom adjustment preset! How could they have not thought to do that?