_full-frame_camera_no_body_cap.jpg) Sony α7 E-mount visible | |
| Type | Bayonet |
|---|---|
| Inner diameter | 46.1 mm |
| Flange | 18 mm |
| Introduced | 2011 |
The E-mount is a lens mount designed by Sony for their NEX ("New E-mount eXperience"[1]) and ILCE series of camcorders and mirrorless cameras.[2] 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.
The short flange focal distance prohibits the use of an optical viewfinder, as a mirror box mechanism cannot be included in this reduced distance. Therefore all E-mount cameras use an electronic viewfinder.
- ^ 株式会社インプレス (2010-07-23). "インタビュー：ソニーNEXの「Eマウント戦略」 〜PI & S事業本部 統括部長 手代木英彦氏に訊く". デジカメ Watch (in Japanese). Retrieved 2021-06-16.
- ^ "SLT & DSLR-Like Cameras | Digital SLR-Like Cameras for Professionals | Sony UK". sony.co.uk. Retrieved 2017-06-17.