hi,
First I am literally novice with photoshop and just a little above knowing about graphics... smile..
on banding I think it's important to know what causes and then be able if possible prevent them occurring...
I have found what causes banding with me, and lot of time it depends on the photograph how many shades and colors and areas of smooth color....
1. scanning..... especially if I scan at 24/32 bit and then display at 16 bit, the dithering action and alogrythems
2. when i change color modes... let say rgb>cymk I sometimes will see it
3. When using jpeg format, it lossy format to begin with and important shades and other data is lost, if compress too much I will defintitely see banding occur...
As far as repair once you have them I am not that good... this link address much better than i can what banding is and how to repair with photoshop.... and the repair is similar to what has been mentioned....
http://www.graphics.com/modules.php?...icle&artid=371 Quote:
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Originally Posted by shellby Does anyone have any other ideas for combating banding. Often I have to recreate backgrounds for product shots. Usually there would be a solid colour with a white glow created on top of this using a radial gradient.
Another way of creating the glow is to draw a circle, then feather it at about 200 and full with white.
Adding noise on a 50% grey layer set to soflight helps a bit, but if you look through the channels you can still see banding. I usually add noise to the softlight layer at about 6 and then lower the opacity of the layer and apply the noise only to the glow.
I don't really want to be adding more and more noise because this starts looking ugly on the print.
The printer is an Epsom Sherper Agfa.
Thanks |