Autorange, thresholds and Dynamic Range slider

[tomczak]

I'm trying to understand how exactly Autorange works. It eventually seems to apply a brightness curve to the image that is constructed based on Auto Black/White, Black/White Threshold and the Dynamic Range sliders.

This is how I understand it so far:

- If Auto Black or Auto White are not checked, the threshold sliders do nothing
- if they are checked, the respective thresholds sliders regulate how much of the input white/black levels are going to be mapped to the black and white sliders of the Dynamic Range slider
- If I keep the Dynamic Range slider values less than the 0%-100% limits, that will prevent block and blown pixels at the ends.

I got the part that Adjust could do the same and more, but I was hoping to stretch the RAW contrast a bit closer to what it should be automatically before fiddling with it manually.

[jsachs]

The further you move the Autorange sliders, the more highlight and shadow detail is lost, but the higher the contrast. If you leave them at 0%, a single black or white pixel in the image will set the black or white point.