Comments

Chienworks wrote on 6/7/2007, 4:10 AM
Use the color curves effect and create a "staircase" looking curve. Keep the angles hard and the lines straight horizontal and vertical. You can create as many or as few steps as you wish and adjust them as necessary to alter the look.

In general, this effect is called posterization.
ritsmer wrote on 6/7/2007, 7:23 AM
Just tried it.

Did not believe my own eyes.
Only 6 colours give a convincing "cartoon look".

Fantastic.

My best thanks to you Chienworks.