Four Thirds system

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Four Thirds system

A standard for digital single lens reflex (DSLR) cameras from Olympus and Kodak. It uses a large CCD with a 4:3 aspect ratio and a lens mount opening twice the size of the CCD image circle. Because CCD sensors are set in slightly from the surface of the chip, this system lets light enter the CCD at less of an angle in order to reach all the sensors more equally. Four Thirds cameras require Four Thirds lenses, and the first camera to employ the system was the Olympus E-1. Other participants include Leica Camera, Panasonic, Fuji Photo Film, Sigma Corporation and Sanyo.

Micro Four Thirds - Smaller SLR Cameras
Introduced in 2008, the Micro version relies on the LCD screen for preview rather than the common through-the-lens view in a full-size DSLR. The mirror is thus eliminated, which reduces the distance between the lens mount and the sensor and enables a slimmer profile DSLR to be built. See mirrorless camera.

Micro lenses are 6mm smaller; however, with an adapter ring, the larger Four Thirds lenses can also be used. For more information, visit See DSLR.
References in periodicals archive ?
Panasonichas introduced the new LUMIX GH5 -- the latest flagship model of LUMIX G Digital Single Lens Mirrorless cameras based on the Micro Four Thirds system standard.
7 25mm is a fast, Micro Four Thirds lens (50mm equivalent) that supports high speed digital signal exchange at 240 fps and works smoothly with the LUMIX G's contrast detection AF system and DFD (Depth from Defocus) technology.
The lens interface is compatible with 1-inch C Mount, Nikon G-type, and Micro Four Thirds (MFT) lenses.
8 PRO, interchangeable lens This is a standard zoom lens that conforms to the Micro Four Thirds System standard and features a constant aperture f2.
7 ASPH (35mm camera equivalent: 30mm) for the Lumix G based on the Micro Four Thirds standard.
the latest replacement lens for the Micro Four Thirds System, the brightest interchangeable lens in the LUMIX G Series.
The E-M1 comes with a 16megapixel (effective) micro four thirds sensor, which happens to be the smallest in the class of the cameras.
The sixth edition covers new technology including Photoshop CS5, Camera Raw 6, Micro Four Thirds cameras, panoramic stitching, HDR merging and other emerging topics.
The Lumix G Series is a new digital interchangeable lens camera system that is based on the new micro four thirds system standard.
The G series is renowned for its micro four thirds system standard for high quality and wide compatibility.
From Sony's NEX-3, to Panasonic's Micro Four Thirds range, these pieces of kit put DSLR-like controls and quality in a much smaller body.
An example of this new camera class is the Micro Four Thirds system.

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