Introduced in 1973 and produced for 3 years. The CL came in two variants: Leica CL and Leitz minolta CL. Both seem to be identical in function and design. Both were made by Minolta in Japan. It was design for use with specifically marketed 40mm and 90 mm lens but will work with most (some debate here, specifically don't use collapsible lens or you will damage the meter) M mount lens. The 40mm frame lines are always displayed. 50mm and 90 mm frame lines display dependent on the lens used.