The Contaflex lV is a 35mm leaf-shuttered SLR camera by Zeiss Ikon, with Compur reflex shutter launched in 1956 and Carl Zeiss Tessar 50mm f: 2.8 lens with helical focusing. The front element of the lens was removable and could be replaced by supplementary lenses. Shutter: Synchro-Compur shutter 1 sec – 1/500, B settings, X-flash sync at all speeds, V – X – M switch for “V-Self-timer” “X-electronic flash” and “M-bulb flash”. Metering System: Selenium cell mounted on top left of camera body, protected by a flip-up metal cap. It had full manual exposure. Measure EV values from light meter then transfer EVs to lens body. EV 3-18. Apertures: f/2.8 – f/22. ASA 25 to 800 and Film Type 135 film (35 mm standard).