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Photo editing

How do I prevent banding in a gradient by artdirectoreric
Posted: 10 Aug 01

To prevent the color steps in a gradient from banding, or showing a harsh edge between areas of differing color, the simplest solution is to apply Noise to the gradient.  A little goes a long way, however.  In 5.5 or lower, use a Noise setting of no greater than 7.  In 6.0 try to stay under 2%.  

Photoshop can automatically do this for you.  Check Dithering when selecting the gradient tool.  It will introduce a little noise for you.  

These processes break up the colors by introducing pixels in the gradient area that differ slightly from their neighbors - just enough to prevent a harsh edge developing when the image is color-separated for printing.

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