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Sony E-mount
Lens mount designed by Sony for their camcorders and mirrorless cameras / From Wikipedia, the free encyclopedia
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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.
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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.