Voigtländer Perkeo I Film 120 roll, picture size 6x6cm • No double-exposure prevention 1951-52 • With double-exposure prevention 1952-55 • Lenses: Vaskar 4,5/75, Vaskar 4,5/80, Color Skopar 3,5/80 • Shutters: Vario, Pronto, Prontor, Prontor S, Prontor SVS, Synchro-Compur, Compur-Rapid • Viewfinder: reverse telescopic finder • Self-erecting bellows • Shutter release: on the top plate • Self-timer (not on 3,5/80 with Compur-Rapid) • Flash PC socket. on the lens-shutter barrel • Cold-shoe • Back cover: hinged, w/red window, some models with red window cover. • Camera leg • Tripod socket: 1/4"