Hi Guillermo, For the sake of science here is the .dng file I was using for both the DT & LR examples earlier.
https://www.dropbox.com/s/cavd1o7z8r5ao0n/_MG_1496.dng?dl=0 Busy playing with it now paying more attention to the histogram. Chris On 2018/04/08 04:17 PM, Robert Bieber wrote: > > Don't quote me on this, but since the pixel values are all floats I'm > pretty sure it's possible for one module to push them beyond the > "maximum" values and another one to bring them back in with the detail > still there, as long as everything ends up within the allowable bounds > by the time it gets converted to int > > > On 04/08/2018 07:11 PM, Guillermo Rozas wrote: >> Can you provide the original DNG so people can play with it? >> >> One think you should take into account is that modules in Darktable >> are applied in a certain order (bottom to top on darkroom). In >> particular, "Exposure" and "Base Curve" come before "Shadows and >> highlights". So, if Exposure pushes the info of the sky past the >> white point, you can not get it back later (at least that's how I >> understand it). Going by the histogram, it looks like this is what >> happening to your picture (there are a lot of pixels close to the >> right edge): the info was there before the exposure (and base curve) >> modules, but not by time you get to the shadows and highlights module. >> >> Two tips I can give you: >> - check the RAW over-exposure indicator (small colors icon below and >> to the right of the picture in darkroom). If the area is really >> non-recoverable it will show as over exposed in RAW. If not, there is >> a way to recover it (not always easy, but the info is there) >> - my first step when editing complex pictures is to use the exposure >> and black sliders on the Exposure module to fit the data exactly >> inside the histogram (using the normal under/over exposure >> indicator). Then I know I'm working with almost all the info the file >> have. >> >> Best regards, >> Guillermo >> >> On Sun, Apr 8, 2018 at 7:04 PM, Peter Cripps <[email protected] >> <mailto:[email protected]>> wrote: >> >> I've seen similar results to Chris. One of the (few) things that >> I've found Lightroom does better than darktable is highlight >> recovery. >> >> I have noticed that the darktable histogram doesn't seem to show >> content at the far right hand side that does show in the >> Lightroom histogram. Don't know if this is relevant. >> >> I hesitate to mention this, since I'm very conscious of the fact >> that darktable is entirely created by people working on their own >> time. It seems ungrateful to pick out one thing that isn't >> perhaps as good as with other paid programs. >> >> Peter >> >> >> >> >> On 04/08/2018 02:51 PM, Chris wrote: >>> >>> Hi, >>> >>> So the shadows & highlights module also does not seem to full >>> 'reveal' the detail in the clouds that I know exists... it >>> simply darkens the existing pixels that we can already see. So >>> not really 'recovering detail' as such. >>> >>> https://www.dropbox.com/s/u3lo4oy9dokdbwh/darkt_04.jpg?dl=0 >>> <https://www.dropbox.com/s/u3lo4oy9dokdbwh/darkt_04.jpg?dl=0> >>> >>> and pushed further >>> >>> https://www.dropbox.com/s/zih4f434frcxizu/darkt_05.jpg?dl=0 >>> <https://www.dropbox.com/s/zih4f434frcxizu/darkt_05.jpg?dl=0> >>> >>> obviously I am going to extremes here... but they still just do >>> not compare to the clarity revealed from LR. >>> >>> https://www.dropbox.com/s/suw9v3jnsszbsec/lr_02.jpg?dl=0 >>> <https://www.dropbox.com/s/suw9v3jnsszbsec/lr_02.jpg?dl=0> >>> >>> Thanks, >>> >>> Chris >>> >>> >>> On 2018/04/08 02:30 PM, Pascal Obry wrote: >>>> Le dimanche 08 avril 2018 à 14:25 -0700, Chris a écrit : >>>>> Anyway, these are my adventures into highlights in DarkTable. >>>> You haven't activate the "shadows & highlight" module, so indeed >>>> nothing done for darktable :) >>>> >>> >>> >>> >>> ____________________________________________________________________________ >>> darktable user mailing list to unsubscribe send a mail to >>> [email protected] >>> <mailto:[email protected]> >> >> >> >> ____________________________________________________________________________ >> darktable user mailing list to unsubscribe send a mail to >> [email protected] >> <mailto:darktable-user%[email protected]> >> >> >> >> ____________________________________________________________________________ >> darktable user mailing list to unsubscribe send a mail to >> [email protected] > > > ____________________________________________________________________________ > darktable user mailing list to unsubscribe send a mail to > [email protected] ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
