This is something you might need to refer.
https://www.youtube.com/watch?v=FOCjw3qmVHo
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This is something you might need to refer.
https://www.youtube.com/watch?v=FOCjw3qmVHo
There are also a number of tutorials on the Orton effect for PS on the web. They differ. The one I showed can be taken as far as people might want. The main control seems to be relative brightness levels rather than just blur.
eg
http://i61.tinypic.com/117fknr.jpg
As the GIMP is destructive when blur is applied to a layer I just created 3 layers with 20,40 and 80px blur. This one was 80 but similar results could be obtained with the others. Brightness and contrast adjustments on a layer are not destructive these days.
John
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