Canon EOS 3
Encyclopedia
The Canon EOS-3 is a 35mm film
135 film
The term 135 was introduced by Kodak in 1934 as a designation for cartridge film wide, specifically for still photography. It quickly grew in popularity, surpassing 120 film by the late 1960s to become the most popular photographic film format...

 single-lens reflex camera
Single-lens reflex camera
A single-lens reflex camera is a camera that typically uses a semi-automatic moving mirror system that permits the photographer to see exactly what will be captured by the film or digital imaging system, as opposed to pre-SLR cameras where the view through the viewfinder could be significantly...

 for professionals and advanced amateurs built by Canon
Canon Inc.
is a Japanese multinational corporation that specialises in the manufacture of imaging and optical products, including cameras, camcorders, photocopiers, steppers and computer printers. Its headquarters are located in Ōta, Tokyo, Japan.-Origins:...

 of Japan
Japan
Japan is an island nation in East Asia. Located in the Pacific Ocean, it lies to the east of the Sea of Japan, China, North Korea, South Korea and Russia, stretching from the Sea of Okhotsk in the north to the East China Sea and Taiwan in the south...

. It was introduced in November 1998
and was offered as recently as 2007, though is no longer.

The camera is the successor to the EOS-5 but has a lot in common with the canon EOS-1n such as the operation of the camera controls and the environmental sealing, whereas the EOS-5 has none.
The common heritage of the EOS-3 and EOS-1 line is also seen in the accessories (such as the motor-drive and battery pack) which are mostly the same or at least interchangeable.

The EOS-3 introduced the 45-point autofocus system later used in the EOS-1v
Canon EOS-1v
The Canon EOS-1v is a 35mm single-lens reflex camera from Canon's EOS series, released in 2000, it is the final film camera in Canon's landmark EOS-1 series of professional cameras...

, EOS-1D
Canon EOS-1D
The Canon EOS-1D is a 4-megapixel professional digital single-lens reflex camera launched in November 2001. It was Canon's first professional-level digital camera developed and released by themselves, the previous D2000 being a collaborative effort with Kodak. It has a 1.3x crop factor with a CCD...

and subsequent Canon professional SLRs.

The EOS-3 inherited a refined version of the Eye-Control system of the EOS-5. This system, when calibrated to a given user, allowed for picking one of the 45 points of the autofocus system simply by looking at it though the viewfinder. An infrared transmitter and receiver mounted around the eyepiece monitored the position of the iris, thus "knowing" where the photographer was looking and focusing on that point. The system has its limitations however, notably eyeglasses and occasionally contact lenses would confuse the system. This feature was never rolled forward to the later 1V body.

The shutter unit of the EOS-3 passed Canon's standard endurance tests of 100,000 shutter cycles whereas the EOS-1v was specified to withstand at least 150,000 shutter cycles.

The EOS-3 incorporated E-TTL flash metering for use with the EX series of external Canon flash units.

External links

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