[Gimp-user] Vignetting correction

[giuliogiuseppecarlo interfree it]

Hello everyone,

i have a problem trying to remove/adding vignetting with Gimp 2.6.8 and .11.

I have seen there is a nice tool in Filters-Distorts-Lens distorsion.

But if i move only the brighten slider, nothing happens. It works only if i move also the main slider (and in 
most images, for example portraits, i won't need to touch it).

Is it the intended behaviour or i'm missing something (for example another tool that only removes vignetting 
and shows a preview)?

Thank you in advance.


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