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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]
Because the lack of a mirror, optical viewfinder, and a shorter flange-focal distance these lenses can be more compact than those for standard Four Thirds. Standard Four Thirds lenses can be used on a Micro Four Thirds camera with full electronic communication using an adapter, but those that do not support contrast-detect autofocus will only ...
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).
As a result, very large zoom ranges (from wide-angle to telephoto, including macro) are feasible with one lens. The typical bridge camera has a telephoto zoom limit of over 400mm (35mm equivalent), although some 21st-century cameras reach up to 2000mm. [12] For this reason, bridge cameras typically fall into the category of superzoom cameras. [13]
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]
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.
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