burkphoto wrote:
Match needle metering… Line up a pointer with a circle in the viewfinder (or on top of some cameras) to balance ISO, aperture, and exposure time. It was how we achieved “correct” exposure before automation. It requires some knowledge of how the three variables interact, as well as what type of meter is in the camera (spot, average, center-weighted, matrix…).
Beyond that, you had to understand light and reflectivity and what to meter.
Bringing back memories. Had to use the match needle method with my first SLR in 1968. But it was really only 2 variables we played with. Film speed was set when the film was loaded into the camera and not touched again until a new roll of film was loaded. That left aperture and shutter speed as the only variables.