Unique Mamiya TLR telephoto with twin barrels, interchangeable 250mm for the one-of-a-kind C-series TLR system.
The Mamiya 250mm f/6.3 is a telephoto lens for the Mamiya TLR (twin-lens reflex) system, specifically the Mamiya C-series interchangeable-lens TLRs. The Mamiya C-series was unique in offering interchangeable lenses on a TLR body — a capability no other TLR system matched.
The 250mm focal length provides genuine telephoto reach on the 6x6cm format, equivalent to approximately 140mm on 35mm film. The f/6.3 aperture is modest but typical for telephoto TLR lenses where the dual-lens design requires two matched optical assemblies. The leaf shutter provides flash sync at all speeds.
Build quality is professional Mamiya standard with robust twin-barrel construction that provides both a taking lens and a viewing lens at the 250mm focal length. The viewing lens shows the photographer the telephoto perspective through the ground glass, maintaining the TLR composition method at telephoto distances.
The Mamiya 250mm f/6.3 is a rare and specialised lens on the used market, of primary interest to Mamiya C-series TLR system users. The interchangeable TLR telephoto concept was unique to Mamiya, and this lens represents one of the most unusual optical designs in medium format photography.