Topic summary
Micro Four Thirds
Extracted from the Wikipedia article Micro Four Thirds system.
Micro Four Thirds reduced the specified flange focal distance from 38.67mm to 19.25mm. This reduction facilitates smaller body and lens designs, and enables the use of adapters to fit almost any lens ever made for a camera with a flange distance larger than 19.25mm to a MFT camera body. Still-camera lenses produced by Canon, Leica, Minolta, Nikon, Pentax and Zeiss have all been successfully adapted for MFT use, as well as lenses produced for cinema, e.g., PL mount or C mount.