The Franke & Heidecke Rolleiflex Automat (MX-EVS), also known as the Rolleiflex 3.5B, is a classic 6x6cm medium format twin-lens reflex (TLR) camera produced from 1954 to 1956, notable for its automatic film winding mechanism and robust construction. It features a 75mm f/3.5 lens (either a Schneider Xenar or a Carl Zeiss Tessar depending on the specific model and era) and a Synchro-Compur shutte