Sepia tone
A traditional method of photography that involves the use of a chemical process that transforms the metallic silver in a black-and-white shot into silver sulfide. It will have the effect of turning the various tones of gray into various shades of reddish-brown. The look can be easily reproduced in digital pictures, either in-camera or with the use of software like Photoshop.
Do you have a better definition? Share it in the comments.
