The flame from a wooden kitchen match. I took it for a college photography assignment back in 1979. I most likely developed this in Kodak D-76.

Camera: Minolta XD11
Lens: Minolta MD Rokkor-X 50mm, f/1.2
Film: Kodak Tri-X 400 B&W
Shooting Program: Aperture Priority
Date: circa November 1979
Location: Norris City, Illinois, U.S.A.

Minolta Tri-X College 39ff