...sepia tones. It's a setting on my camera, and Photoshop helps to improve the look of the results.
I didn't remember that the word "sepia" derives from the Greek word for marine animals of the squid family. In French, a related term is seiche [SESH], meaning cuttlefish. The ink called sepia is basically squid ink. It's dark brown, and not really black. Sepia-toned photos are rendered shades of brown rather than black, gray, and white. They give everything an old-fashioned look.