Leica Screw Mount

Flange distance: 28.8 mm

Notes

39mm × 26tpi screw thread introduced by Leitz on the Leica I (1930), 28.8mm flange. Also called LTM, L39, M39 or screwmount. Rangefinder-coupled and broadly interchangeable across Leica, Canon, FED, Zorki, Nicca and Leotax bodies and lenses. Adaptable to Leica M via ring.