An example image would be helpful. :)

Anyway, of the top of my head, you could try the following:

Image -> duplicate image in a new layer. Change the layer to B&W usings luminance. Invert layer and apply large gaussian blur. Change layer mode to soft light or overlay. Reduce opacity to taste.

On Sun, Jan 8, 2017 at 6:38 PM, Casey Connor

wrote:

Hi -- I was working on a 16bit tiff trying to boost shadows in gimp similar to how I do it in raw photo development software.

I was almost able to do it, but not well, because gimp doesn't provide much resolution in the low end of the histogram when adjusting curves, etc.

The best solution I found in gimp was to use gmic and enlarge the curve dialog across two monitors, which almost gave enough resolution to adjust as needed, but it was still a pain, and the results weren't as nice.

I ended up using rawtherapee semi-successfully (the controls for the curves are easier to adjust) but none of the solutions compared to using the raw software I normally use (Canon's Digital Photo Professional) because it uses some kind of scaled histogram (e.g. log scale on x axis).

Any techniques anyone knows to get this done in gimp? I know there are other methods with masks and overlays and such -- I haven't been too impressed with them and am hoping for some kind of curve tool... maybe a plugin? Thanks!

-c

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