Four Thirds system

(redirected from Micro Four Thirds)
Also found in: Acronyms.

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 www.four-thirds.org. See DSLR.
References in periodicals archive ?
The high quality Micro Four Thirds lens compatibility also helps create sharp and cinematic images that look incredible.
Additionally, the LUMIX G2 is compatible with all Micro Four Thirds System lenses, allowing users even higher levels of performance in a digital interchangeable lens camera.
8 DN lenses, which are available for both Micro Four Thirds and Sony E-Mount camera systems.
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They're far better than a compact camera could produce, but nowhere close to what a Micro Four Thirds or Sony NEX can take.
When compared to the Four Thirds System standard, the primary distinguishing characteristics of the Micro Four Thirds System standard are:
1 ]Contrast AF with DFD Technology works only with Panasonic Micro Four Thirds lenses.
It's much bigger than the Micro Four Thirds sensors, so it does fantastically in low light.
The grand prize winner will receive a Panasonic 42" TH-42BT300U Pro Plasma reference Monitor and Vocas Micro Four Thirds to Prime Lens adapter, prizes valued at more than $5,000.
Thanks in part to its Micro Four Thirds format and 4K recording ability, firmware Ver.
The combo of pocketable dimensions and ease of use was innovative back then and with its Micro Four Thirds innards, the E-P1 is just as forward-thinking today.
The company also announced the launch of a new product line and two new lenses that are specifically designed for use with Micro Four Thirds and E-mount mirrorless interchangeable lens camera systems.

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