 Visoflex reflex viewing attachment) up to the current film Leica M-A and digital Leica M10 cameras.This lens mount has also been used by Epson, Ricoh, Minolta, Konica, Cosina Voigtländer, Rollei, Carl Zeiss AG and Rollei Fototechnic on some of their cameras.The Leica M mount was introduced in 1954 at that year's Photokina show, with the Leica M3 as its first camera.