Gray scale
From The Glossary of Digital Photography
A series of gray images, from pure black to pure white, in even increments. There are often 256 levels of gray in a gray scale because the 8-bit gray scale is one of the most frequently used types.
ONLINE GLOSSARY OF DIGITAL PHOTOGRAPY
A series of gray images, from pure black to pure white, in even increments. There are often 256 levels of gray in a gray scale because the 8-bit gray scale is one of the most frequently used types.
