david wrote:
Iarga,
Yours is perhaps the best of all, in that it has brought out excellent detail of the bird. What was the secret? Share it with us!
david.
David, the result of steven8 is almost the same, but with less noise. So I don't think my try is the best. It's only a different interpretation. I don't have secrets. To make a dark object in a bright sky visable, you can use the retinex filter. The preview of the retinex filter of GIMP is most of the time totaly different than the outcome. So you have to play with it. It is a pitty there is no retinex filter in G'MIC (yet). In Rawtherapee there is a retinex filter, but that filter solely works with RAW.
I made this interpretation only with GIMP and G'MIC. If I don't use only GIMP and G'MIC and use other freeware also, I can get a better result within a minute (in this case!), but I don't want to cheat.
With my beloved G'MIC "Tone enhance" and other tone mapping filters you can also make dark parts of an image more visable. Maybe other people know a filter in G'MIC that is comparable with the retinex filter?
from wikipedia: "...duplicate the background layer,
invert the copy and set the blend modes of that top layer to "Soft Light". You can also use an inverted black and white copy of the image as a mask on a brightening layer, such as Curves or Levels."
With this you can (experiment) have a nice result also very quick.