How to make a good photograph when there are 2 (or more)
light sources that make over/sub-exposed zones ? You can't take a good shot
even by bracketing :
Follow these explanations :
Open AnaBuilder, and load the lighter photograph as left, and the darker
as right. It buids an red anaglyph, but it is without interest.
Ask for "Tools/Overex-subexp merger". The dark image should appear in
a new panel. If you want you can resize it, but it doesn't matter.
Set all fields to zero. And click to "merge". The light photograph should
appear, perhaps with some merges with the darker
Adjust the "Transp gap" in order to have the best transparency mask
you can. This field is though to be between 0 and 3*255. With a value of
zero, only the pure white is transparent. . With a value of 3*255, all colors
are transparent, and you retrieve the whole dark image.
Tune the "Transp bevel" in order to make a progressive transparency,
in the color space (according to brightness levels).
A little diagram :
Tune the "Transp blur" in order to blur the transparency in the image
space (according to pixels positions).