Micro Four Thirds Mount (MFT)
Direct Answer
The Micro Four Thirds Mount (introduced in 2008 by Olympus and Panasonic as the world's first mirrorless interchangeable lens system) features a 19.25 mm Flange Focal Distance, a 38.0 mm throat diameter, and an 11-pin all-electronic bayonet interface. Governing an open consortium, it is used across OM System, Lumix, Blackmagic Design, and DJI aerial cameras.
Source: Four Thirds System Consortium Standards / CIPA
Specs
| Flange Focal Distance (FFD) | 19.25 mm (0.758 in) |
| Inner Throat Diameter | 38.00 mm (1.496 in) |
| Bayonet Tabs | 3 symmetrical stainless steel tabs |
| Electronic Interface | 11 gold-plated electronic contacts (shared protocol between OM System and Panasonic) |
| Historic Milestone | First commercial mirrorless interchangeable lens mount in history (Panasonic Lumix G1, 2008) |
| Consortium Members | OM Digital Solutions (Olympus), Panasonic, Blackmagic Design, DJI, Sharp, Voigtländer, Laowa |
| Camera Systems | OM System OM-1 Mark II, Panasonic Lumix GH6 / G9 II, Blackmagic Pocket Cinema Camera 4K, DJI Inspire 3 X9 MFT |
The Open Interoperability Standard
Micro Four Thirds is the only photographic mount shared seamlessly across major competing camera brands. A Panasonic Leica DG lens mounts with full autofocus, aperture control, and optical stabilization on an OM System camera, and an M.Zuiko Olympus lens functions flawlessly on a Blackmagic cinema camera.