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Topic: Four Thirds System

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	Four Thirds System - Wikipedia, the free encyclopedia
		Four Thirds is not an open standard, however, as it does not meet the "allowing anyone to use" criteria commonly accepted as the definition of an open standard.
		The advantages of the system include more compact telephoto lenses (a Four Thirds lens with a 300 mm focal length would cover about the same angle as a 600 mm focal length lens for the 35 mm film standard) and more even delivery of light to different parts of the sensor.
		There is little doubt that the Four Thirds standard specifies the aspect ratio, in addition to the size of the imaging circle.
	en.wikipedia.org /wiki/Four_Thirds_System (658 words)

	Olympus E-300 - Wikipedia, the free encyclopedia
		The Olympus E-300 (Olympus Evolt E-300 in North America) is an 8 megapixel digital SLR manufactured by Olympus of Japan and based on the Four Thirds System.
		It is the second camera (after the Olympus E-1) to use the Four Thirds system, and the first intended for the consumer market.
		Instead, a Porro mirror system is used; this fits sideways within the camera, with a sideways-swinging mirror, and locates the viewfinder eyepiece to the user's left relative to the lens centerline.
	en.wikipedia.org /wiki/Olympus_E-300 (190 words)

	The Four Thirds System Digital Camera Standard \| Samy's Camera (Site not responding. Last check: 2007-11-04)
		In late September 2002, the Four Thirds System was established by Olympus and Kodak as a new common standard for digital cameras, promising interchangeable lens mount capability not just between cameras, but between different brands of cameras.
		The Four Thirds System, named for the 4:3 aspect ratio of the sensor size, is not based on existing standards for 35 mm film SLR camera system lenses.
		Photographic experts are looking forward to the expanding possibilities of the Four Thirds System, as more camera and sensor makers introduce digital cameras utilizing the 4/3 image sensors combined with dedicated lenses able to produce image quality as good as or even better than cameras boasting larger sensors and 35mm style lenses.
	photonews.samys.com /public/item/107614 (528 words)

	Olympus and Kodak confirm 'Four Thirds System': Digital Photography Review
		The Four Thirds System is not based on existing standards for 35 mm film SLR camera system lenses, but instead establishes a new common standard for the interchange of lenses developed exclusively to meet the optical design requirements of digital SLR cameras.
		At the same time, the new system standard will set a rule for both the image circle size (the diameter of the area in which the subject is resolved) and the back focus distance (the distance from the lens mount to the image sensor).
		The major benefit of Four Thirds System is that it will allow the design of dedicated, high-performance digital camera lens systems that are more compact than their 35 mm film SLR camera lens counterparts.
	www.dpreview.com /news/0209/02092410olydak43inch.asp (747 words)

	Olympus Four Thirds System Digital LSR (Site not responding. Last check: 2007-11-04)
		The Four Thirds system is a new open standard for digital SLR cameras with interchangeable lenses that utilise a 4/3 inch image sensor.
		Manufacturers of these camera systems have until now adopted the lens mount used in their own respective 35mm or APS film SLR camera, so bodies and lenses from different manufacturers are incompatible with one another.
		Along with the Four Thirds System technology, the Digital SLR System features a metal body that ensures peak performance day-in and day-out, as well as outstanding image quality via "Lenses designed to be digital".
	www.digitalreview.ca /cams/OlympusESystem.shtml (775 words)

	Olympus E-1 - Wikipedia, the free encyclopedia
		This contrasts with its contemporaries which offered systems based on reused parts from previous 135 film systems, modified to fit with a sensor size of APS-C.
		It uses the Four Thirds System lens mount and imaging system.
		This design choice means that because the CCD is smaller than a 35mm negative, Four Thirds lenses and camera bodies can be made smaller and lighter than those of preceding SLRs.
	en.wikipedia.org /wiki/Olympus_E-1 (336 words)

	Olympus Four Thirds System E-1 Digital SLR (Site not responding. Last check: 2007-11-04)
		Based on this new Four Thirds open standard, the Olympus Digital SLR System achieves an optimal balance between image quality, camera and lens size, and system expandability, maximizing the performance of image sensors and lenses with a 100% digital-from-the-ground-up design.
		The new Four Thirds System is an open standard for digital SLR cameras and interchangeable lens systems that utilize a 4/3-type image sensor.
		The system maximizes the performance of image sensors and lenses, and establishes a common standard for lens mounts, allowing photographers greater flexibility with a choice of bodies and lenses from different manufacturers using the Four Thirds System.
	www.digitalreview.ca /cams/OlympusE_1System.shtml (1215 words)

	OLYMPUS News Release
		The Four Thirds System standard continues to be open to all, and the participation of additional firms is being encouraged.
		The Four Thirds System standard defines a standard for the design and development of an entirely new generation of digital SLR camera systems and was established in an effort to fully realize the potential user and performance benefits offered by modern digital imaging technology.
		In addition, the system defines an open standard for lens mounts that provides consumers with a wider range of choice by assuring compatibility between Four Thirds System bodies and lenses produced by different manufacturers.
	www.olympus.co.jp /en/news/2004a/nr040213ftsyse.cfm (287 words)

	Olympus Australia
		The Four Thirds System solves this problem by ensuring that light is passed through to the image sensor in a straight line, thereby achieving consistently high image quality even at image edges and even when wide-angle lenses are used.
		However, with the Four Thirds System, the diameter of the lens mount is much larger than that of the image circle, making it easy for light to pass straight to the image sensor.
		Moreover, since the required focal length for the Four Thirds System is half that of a 35mm camera, it makes it possible for lenses to be much smaller than traditional 35mm camera lenses.
	www.olympus.com.au /e1/imagequality/fourthirds.htm (418 words)

	Leica Camera AG Endorses Four Thirds System Standard (Site not responding. Last check: 2007-11-04)
		The Four Thirds System standard was established to facilitate the development of digital SLR camera systems that are designed and developed from the ground up to maximize the performance potential of digital imaging technology.
		The standard uses a 4/3" image sensor that makes it possible to realize the high image quality and high mobility that are demanded of SLR camera systems, and defines an open standard for lenses and lens mounts to assure compatibility between bodies and lenses produced by various manufacturers participating in the standard.
		As one of the original proponents of the Four Thirds System standard, Olympus will continue to promote its widespread acceptance and to encourage other manufacturers to participate in this important new open standard for the digital age.
	www.olympusamerica.com /cpg_section/cpg_PressDetails.asp?pressNo=457 (392 words)

	Janez Puhar: biography and encyclopedia article (Site not responding. Last check: 2007-11-04)
		Four Thirds System Four Thirds System quick summary:
		The four thirds system is a standard for digital single-lens reflex cameraslr camera design and development....
		An orthophoto is an aerial photograph that has been rectified such that it is equivalent to a map of the same scale....
	www.absoluteastronomy.com /encyclopedia/j/ja/janez_puhar.htm (545 words)

	OLYMPUS News Release (Site not responding. Last check: 2007-11-04)
		The first Four Thirds System products to be introduced to the market were the professional-oriented Olympus E-1 and related E-System lenses, flash units, and other accessories that were launched by Olympus in October 2003.
		The Four Thirds System uses a Four Thirds-type image sensor, which makes it possible for manufacturers to design extremely compact lenses that combine high mobility and handling ease with the optical characteristics needed to maximize sensor performance.
		The Four Thirds System standard was first announced in September 2002 by Olympus Corporation and Eastman Kodak Company of the United States, and is currently also supported by Fuji Photo Film Co, Ltd., Sanyo Electric Co., Ltd., Panasonic, and Sigma Corporation.
	www.olympus.co.jp /en/news/2005a/nr050113jointe.cfm (664 words)

	BirdForum - Four thirds system?
		Whilst this system is competitively priced it denies access to image-stabilised lenses which to me have revolutionised bird photography.
		This means that the chances of the 4/3rds system having a 10 — 12 megapixel sensor in the near future are very slim indeed, so having bought the lenses your choice of cameras when upgrading in the future will be limited.
		The issue of sharpness on such high pixel density small sensors is also problematic due to the way in which light entering through a round aperture on the lens is not focussed as a point, but as a small disc (this is known as an Airy disc).
	www.birdforum.net /showthread.php?t=10372 (1262 words)

	Olympus to Exhibit Four Thirds System Digital SLR Prototypes at PMA2003
		The Four Thirds System is a new open standard for digital SLR cameras and interchangeable lens systems that utilize a 4/3-inch image sensor.
		Olympus is currently developing a line of Four Thirds System bodies, interchangeable lenses, and accessories that offer professional-quality ruggedness, performance, and system expandability.
		The new Olympus Four Thirds Systems products are to be officially announced in June, and introduced to the market in September 2003.
	www.dcviews.com /press/Olympus_DSLR.htm (229 words)

	four-thirds panasonic (Site not responding. Last check: 2007-11-04)
		The Four Thirds System standard was announced in September 2002 by Olympus and Kodak, and has been supported since its inception by Fuji.
		The system provides an open standard which, once cameras and lenses are available from multiple manufacturers, should allow for interchange of lenses and bodies from different manufacturers.
		Advantages of the system should include more compact telephoto lenses (a 300 mm Four Thirds Lens would be equivalent to a 600 mm lense for the 35 mm film standard), and more even delivery of light to different parts of the sensor.
	www.website-about.com /four-thirds-panasonic.php (934 words)

	NEWS! -
		By teaming Olympus's industry-leading SLR camera technology with Panasonic’s advanced digital AV technology to offer Four Thirds System digital SLR cameras and a wide lens lineup, the two companies plan to offer camera enthusiasts a level of creativity and satisfaction have never experienced before.
		The Four Thirds System standard defines design and development standards for digital SLR camera systems that fully realize the performance potential of digital imaging technology.
		Four Thirds System cameras use a 4/3-type image sensor that makes it possible to achieve the high image quality and high mobility demanded of SLR camera systems.
	www.imaging-resource.com /NEWS/1140962401.html (732 words)

	Olympus E-1 Digital SLR
		Other apparently similar systems from Nikon and Canon accept many of those company's extensive line of lenses, but purists will note that with some wide-angle lenses, the corners of the imaging chip are not given the same coverage as the rest of the frame because these lenses were originally intended for imaging onto film.
		The Four Thirds System is an open digital standard for digital SLRs that have also been adopted by Kodak and Fuji, although neither has produced a camera using that design.
		Another feature of the Four Thirds System is a 4:3 image aspect ratio that seems designed for photographers who want to get an 8x10 from the E-1's files without cropping.
	www.vividlight.com /articles/3213.htm (1366 words)

	The FourThirds System - Photoxels.com
		They therefore propose new lenses "designed for digital." Adopting the new 4/3 System will result in much smaller lenses and -- with an established open standard for camera body and lens mounts -- lenses that are interchangeable across all manufacturers subscribing to the 4/3 System.
		It is interesting to note that one of the co-signors of this 4/3 System, Kodak, has already started using full-sized 24x36 mm CMOS sensors rated at 14 Megapixels resolution in its professional SLR cameras.
		We believe Olympus has started a good thing with the 4/3 System proposal and encourage it to keep the discussion open and honest so all digital SLR camera manufacturers can participate on an equal footing in the development of the 4/3 System.
	www.photoxels.com /news_FourThirds.html (733 words)

	Steve's Digicams - Breaking News - Olympus 09/24/02 Press Release
		The Four Thirds System is not based on existing standards for 35mm film SLR camera system lenses, but instead establishes a new common standard for the interchange of lenses developed exclusively to meet the optical design requirements of digital SLR cameras.
		The Four Thirds System uses a 4/3-type CCD, CMOS or other image sensor, and will facilitate the development of dedicated digital camera lens systems that maximize image sensor performance and ensure outstanding image quality while also being smaller and easier to handle than 35mm film SLR camera lens systems.
		In addition, the new system defines standards for image circle size (the diameter of the area in which the subject is resolved) and back focus distance (the distance from the lens mount to the image sensor).
	www.steves-digicams.com /pr/olympus_09242002_pr.html (865 words)

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