Re: [Gimp-user] boosting shadows

[Partha Bagchi <partha1b gmail com>]

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 <gimp-user-list caseyconnor org
> 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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