halftone
A technique in which different tones of color or shades of grey are simulated using a pattern of dots that vary in size, shape or spacing. These can appear either by artistic choice, or as a consequence of reproduction.
If the dots are all equal in size, use Ben-Day dots instead.
Examples
- Danbooru post #1500677: Ben-Day dots over the hair and faces vs Halftone over the background
- Danbooru post #1055526