⚡ Are my articles too long? Click this button for a condensed version!The Olympus OM-4 is a 35mm SLR produced by Olympus from 1983 to 1987, serving as the flagship successor to the OM-2N and the most advanced entry in the OM-series that began with the original OM-1 in 1972. … Continue reading Olympus OM-4 (1983)