The E-mount is a lens mount designed by Sony for their NEX and ILCE series of camcorders and mirrorless cameras. The E-mount supplements Sony's α mount, allowing the company to develop more compact imaging devices while maintaining compatibility with 35mm sensors. E-mount achieves this by:Minimising mechanical complexity, removing mechanical aperture and focus drive.
Shortening the flange focal distance to 18 mm compared with earlier offerings from Sony which used 44.5 mm.
Reducing the radius of the flange.
Sony α7 E-mount visible
Sony NEX-5 E-mount
Sony NEX-5 with Sigma 30mm F2.8 EX DN lens.
Sony α7 with an adapted Carl Zeiss Biogon 28mm F2.8 lens for Contax G mount.
A lens mount is an interface – mechanical and often also electrical – between a photographic camera body and a lens. It is a feature of camera systems where the body allows interchangeable lenses, most usually the rangefinder camera, single lens reflex type, single lens mirrorless type or any movie camera of 16 mm or higher gauge. Lens mounts are also used to connect optical components in instrumentation that may not involve a camera, such as the modular components used in optical laboratory prototyping which join via C-mount or T-mount elements.
Male mount of Minolta MC-Rokkor 58mm 1:1.4 lens with female lens mount of an Minolta XD-7
A teleconverter attached between a camera and its objective
This lens adapter is a passive adapter designed for mounting a Nikon F mount lens to a Micro Four Thirds camera.