This is from quite some time back:
| > A quick fix in this situation is to go to Highlight Reconstruction
| > in the Basic group, switch it to 'reconstruct in LCh', and turn down
| > the clipping threshold until the magenta highlights disappear. On your
| > example CR2 that got me a decent starting point with minimal effort.
|
| Yes, It works! Thanks! White sky better then pink sky! But... why in
| Adobe Lightroom I see gradients and middle colors between white &
| blue? And I see in the darktable sloppy spots with clear contrasting
| borders :-(
This area has clipped channels in the RAW file, which means that
there is not enough information left to accurately determine the real
colours. Any colour reconstruction here necessarily involves heuristics
and assumptions; the program basically has to guess what the real value
of the clipped channel or channels is (in a world where they could go
higher without being clipped) in order to determine the theoretical
colour of the area.
My impression is that Lightroom simply has many more heuristics in this
area than Darktable does.
Note that heuristics for recovering clipped areas are notorious for
misfiring every so often, giving you colour anomalies and so on. This
may be one reason that people are not enthused about working on them
for darktable.
- cks
------------------------------------------------------------------------------
October Webinars: Code for Performance
Free Intel webinars can help you accelerate application performance.
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from
the latest Intel processors and coprocessors. See abstracts and register >
http://pubads.g.doubleclick.net/gampad/clk?id=60135991&iu=/4140/ostg.clktrk
_______________________________________________
Darktable-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/darktable-users
