Michele Petrazzo <[EMAIL PROTECTED]> writes:

> On the same machine with photoshop, a preview of a "curves" tool
> spend only 4-5 seconds, but when press the OK button, it spend about
> the same time of gimp.

As you already guessed, the preview of the color manipulation tools in
GIMP isn't really a preview. It's the full thing and no attempt is
made to for example restrict the effect to the visible area or even
render it on a scaled-down version of the image. That's a known
problem and should not be too difficult to improve. Just needs a
motivated hacker who has some spare time. Do you volunteer?

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