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The Micro Four Thirds system (MFT or M4/3 or M43) (マイクロフォーサーズシステム, Maikuro Fō Sāzu Shisutemu) is a standard released by Olympus Imaging Corporation and Panasonic in 2008, [1] for the design and development of mirrorless interchangeable lens digital cameras, camcorders and lenses. [2]
The Micro Four Thirds system (MFT) of still and video cameras and lenses was released by Olympus and Panasonic in 2008; lenses built for MFT use a flange focal distance of 19.25 mm, covering an image sensor with dimensions 17.3 × 13.0 mm (21.6 mm diagonal).
Larger sensors produce a better image signal-to-noise ratio and better dynamic range. The GH series of Micro Four Thirds cameras, and the LX100, have a unique "multi-aspect" sensor, that is larger than the lens image circle. This allows three different aspect ratios, 4:3, 3:2 and 16:9, to be used natively.
The final Four Thirds camera, the Olympus E-5, was released in 2010. [13] In 2013, Olympus released the Olympus E-M1, which is a Micro Four Thirds camera with enhanced support for legacy Four Thirds lenses using on-chip phase detection autofocus. [14] Olympus discontinued production of the Zuiko Digital lenses for Four Thirds in 2017. [15]
Of these ultracompact models, the Micro Four Thirds cameras (Panasonic GM1, Panasonic GM5, and Z CAM E1) have by far the largest sensor, with an area nearly twice as large as Samsung's and Nikon's "1-inch" sensors and nearly eight times as large as the Pentax Q's sensor.
The Micro Four Thirds system (with its crop factor of 2 when compared to 35 mm still) does not offer the degree of shallow-focus effects possible with full-frame cameras. Micro Four Thirds has the same sensor size as the Four Thirds System but replaces the complex optical path needed for the optical viewfinder with an electronic viewfinder ...
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