The problem lies in having too great a value range in any given area, as other artists have mentioned. You can really see it with this posterized Photoshop greyscale comparison. The photo, on the left, shows larger simpler areas of dark, medium and light values. The painting, on the right, shows those same areas broken up into too many value changes where they don't exist.
Moving back as you work, using a mirror, or perhaps that reducing gadget may help.
|