GIMP Version: 2.6.11
Operating System: Mac OS
OS Version: 10.6.8
GIMP Experience: Beginner Level

List any relevant plug-ins or scripts:
GMIC

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HI

I'm new in Gimp
I apply Rodilius effect as a screen shoot included . A big difference in between preview window and final result .
So, any setting i missing ? or something i can set it to the final result as what as i see it in a preview window ?

Thanks in advance .



kpo

Did you change the zoom factor of the preview window ?

You can try turning up the amplitude just a bit brighter than what you really want.

This is not about what i zoom in or out in preview window ,the image effect you can see in the screen shot got more sharp and bright ,the result just make it blur and soft no matter what i zoom in or out in preview window.

I turn up the amplitude From 10 to14.07 ,this is no difference and just make my picture more blur .
also you can see the preview window 's effect is sharp

The dirty little secret with GIMP previews is that they are just approximations and indeed, not good ones. To use even G'MIC requires experience with those preset. As you know the behavior of the settings, you can then make an intelligent guess as to the outcome based on the preview. Trust me that it's not just G'MIC that has this preview issue w.r.t. GIMP plugins. Again, with experience, you get a mind's eye knowledge of what the output will be based on the inaccurate preview. Sorry about being the barer of bad news, but the truth is the truth.

Sound mean i have to make more test on this .......

I must agree with Lylejk often the preview diverge from the final result (and not sure how could be possible but always looks better in the preview.

and yes with a bit of experience usually is possible to guess from the preview the final result