A tone-curve can be 'reshaped'/bent (non linear more complex adjustment) Levels can only have changes made to end and mid points (3 points of change)
On 04/30/2017 05:26 PM, [email protected] wrote: > On Sat, 29 Apr 2017 09:16:12 +0200 > Remco Viëtor <[email protected]> wrote: > >> On vendredi 28 avril 2017 23:42:34 CEST I. Ivanov wrote: >> For me it's mostly a balance between ease of use and precision of >> the correction: >> - "Exposure" (or "levels") are easy to use, but only have 2 (or 3) >> points to adjust. They are the only ones that allow precise >> correction of white and black point. >> - "Tonecurve" is the most precise for anything but black and white >> points, but requires more care, and I find it difficult to use for >> the dark tones. (hint for devs: add a logarithmic mode like for the >> basecurve?) >> - "Zones" is somewhere in between, although I won't try to correct >> black and white point with it. >> >> "Exposure" has the added advantage that you can correct black and >> white points in both directions, the others only allow you to narrow >> the range. I find that the initial conversion can be too eager to >> clip highlights; this cannot be recovered with "levels" or >> "tonecurve", but only(?) with exposure. Tip: look up luminosity >> masks. > > Thank you for all the tips, but I still don't understand what's the > difference between the levels and the tone curve. > > I wish somebody would add to the documentation: > > * list of modules doing similar jobs > * this one is better at this, this one is better at that... > > I'm just trying to understand and I'm sure I could do a much better > PP if I understood what I'm doing > ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
