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How do I avoid banding in Gradients?


johnp Plus
12 141 United Kingdom
27 Mar 2008 7:01PM
I've applied a circular gradient to the background of a portrait and there is very noticeable banding. I understand why - only 256 shades from end to end. I could obviously do better in 16-bit, but when it's converted back to 8-bit to mail to the lab we're back to square 1. And yes, I did have dithering checked.

I've tried applying gaussian blur but it didn't really help.

Can anyone offer some advice, please?

John

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Big Bri Plus
15 16.1k United Kingdom
27 Mar 2008 7:45PM
apply uniform noise at about 5%
User_Removed 13 17.9k 8 Norway
27 Mar 2008 7:45PM
...or get a better monitor perhaps?
Big Bri Plus
15 16.1k United Kingdom
27 Mar 2008 7:49PM
Actually, 5% worked in PSP. I just tried in Photoshop and it should be much less, around 1 to 2%.
Big Bri Plus
15 16.1k United Kingdom
27 Mar 2008 7:50PM
Mike, you can't talk. Look at the banding in your avatar!!!!

Wink
User_Removed 13 17.9k 8 Norway
27 Mar 2008 8:22PM
PMSL!!!

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