The Petri FT, a stopdown-metering SLR, features a proprietary Petri breech-lock lens mount. Notable for its distinctive design elements, including an angled shutter release, a separate ASA dial adjacent to the rewind crank, and a front-facing compartment for the mercury meter battery. Additionally, the inclusion of a stopdown lever beside the shutter button enhances its functionality. This camera embodies Petri's unique approach, offering photographers a blend of innovation and practicality in a compact and stylish body.