The Four Thirds system is a standard created by Olympus and Kodak for digital single-lens reflex camera (DSLR) design and development.
The system provides a standard that, with digital cameras and lenses available from multiple manufacturers, allows for the interchange of lenses and bodies from different manufacturers. U.S. Patent 6,910,814 seems to cover the standard. Proponents describe it as an open standard, but companies may only use it under a non-disclosure agreement.
The name of the system stems from the size of the image sensor used in the cameras, which is commonly referred to as a 4/3" type or 4/3 type sensor. The common inch-based sizing system is derived from vacuum image-sensing video camera tubes, which are now obsolete. The imaging area of a Four Thirds sensor is equal to that of a video camera tube of 4/3" diameter.
Helios-44-2 lens history Helios 44-2 - small-format lens for SLR cameras. The fast six-glass anastigmat. Enlightened or multilayer optics illumination.
Helios-44-2 lens description:
Fixed / Prime
Focus Type: Auto
Name: BELL & HOWELL 80-205MM F4.5 MC OLYMPUS OM FIT ZOOM MACRO FOCUSING LENS TESTED
Latvian SHIPPING Ls3.50 SIGNED-FOR. WORLD WIDE Ls13More>>
Helios-40-2 lens history Six lens enlightened, over aperture anastigmat slightly increased compared with the normal lens focal length. Equipped with iris diaphragm and ring pre-install it. Helios-...
Helios 40-2 lens history
Helios 40-2 lens - Six lens enlightened, over aperture anastigmat slightly increased compared with the normal lens focal length. Equipped with iris diaphragm and ring pre-install it.
Helios 40-2 lens description
Helios 44M 4 lens history Regular small-format lens for SLR cameras. The fast six lens anastigmat. Enlightened optics or multi-layer coating. It features the exact match of visual and photographic i...
Helios 44M 4 lens history
Helios 44m-5 standard lens for small-format SLR cameras. Aperture six-lens anastigmat. Coated optics and multi-layer coating. Differs exact match visual and photographic image...
Helios-44m-5 lens history
The prototype was Helios 44m lens is Zeiss Biotar 2 / 58. Even earlier predecessor was born in 1896 Planar. It is a versatile high speed lens. It can be used as kit lens, portrait lens, landscape lens, macro lens (including the rings). The lens in the embodiment of screw in the M42 costs about 25-75 dollars. Since this lens is fairly inexpensive, then it often makes eyeglass monocle (Lensbaby).More>>
Industar lens history
industar-50-2 russian lens the main camera russian lens types Sharp, Zenith, Crystal, which replaced the Industar-22. 4 lens enlightened anastigmat type "Tessar" in threaded frame with a retractable or nevydvigayuschimsya tube. Equipped with iris. For its time, had a high-resolution with a well corrected chromatic aberration.
Industar 61 L Z lens history. Industar-61 L/Z four m42 lenses anastigmat average luminosity with enlightened eyes. Equipped with iris, in the version for SLR cameras - more "jumping" diaphragm.
Industar 61 L Z lens history
Industar-61 L/Z four lens anastigmat average luminosity with enlightened eyes. Equipped with iris, in the version for SLR cameras - more "jumping" diaphragm.
JUPITER-11A - four-lens anastigmat enlightened. Equipped with iris diaphragm. Based on the lens Sonnar production Carl Zeiss. Krasnogorsk plant produced...
JUPITER-11A lens history
Jupiter-21M - Produced Krasnogorsk Mechanical Factory (KMZ) and Vologda Optical and Mechanical Plant (VOMZ). This lens with a jumping diaphragm is intended as a replaceable lens for cameras of type...
Jupiter-21m lens history
Jupiter-37A lens history
Long-focus lens with manual aperture and high resolution. Supplied with lens hood. Available also in version with multi-achromatic enlightenment - MC.
Jupiter-37A lens description
Jupiter 9 - lens for Sony NEX cameras. Equipped with iris. Originally had the title "HCC-85 - Zonnar Krasnogorsky", 85 mm lens, and exist in versions...
Jupiter 9 lens history