Editing Halftone (section)

===Dot shapes===
Though round dots are the most commonly used, many dot types are available, each having its own characteristics. They can be used simultaneously to avoid the moiré effect. Generally, the preferred dot shape is also dependent on the printing method or the printing plate.

*Round dots: most common, suitable for light images, especially for skin tones. They meet at a tonal value of 70%.
*Elliptical dots: appropriate for images with many objects. Elliptical dots meet at the tonal values 40% (pointed ends) and 60% (long side), so there is a risk of a pattern.
*Square dots: best for detailed images, not recommended for skin tones. The corners meet at a tonal value of 50%. The transition between the square dots can sometimes be visible to the human eye.<ref>Kay Johansson, Peter Lundberg & Robert Ryberg, ''A Guide to Graphic Print Production''. 2nd ed. Hoboken: Wiley & Sons, p. 286f. (2007).</ref>