Canon EOS Resources Additional information relating to- Canon EOS-650

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Modern AE (auto Exposure) SLR cameras usually provide a host of options to allow user to preselect a particular type of exposure control method to handle a given photographic scenario. EOS 650 offers conventional exposure control modes such as Intelligent Program AE, Shutter Priority AE, Aperture-Priority AE and Manual Override. Among the available options, there is a Depth of Field AE mode which remains exclusive with the EOS650 and strangely has been omitted in the more serious EOS 620.

DEPTH OF FIELD AE One of the interesting offering in the EOS650 was the depth of field AE feature. It allows user to choose what part or parts of an image will be in focus. Once that has been decided, the EOS 650 will automatically set the exposure to provide the required depth of field. Credit: Images courtesy of Mr. Melissa Bowen® <kellylove1975@yahoo.com> where he also operates a popular Ebay Store as well as a website (URL:www.UsedCameraBuyer.com) aiming to BUY used photo equipment. Image copyright © 2003. All rights reserved.

For explanation purposes, let's say that there are two subjects that the photographer wants in focus. With the camera in the depth of field AE mode, the user simply points the lens at the nearest subject and presses the shutter button halfway; the EOS autofocus system will gauge the distance to the subject. The autofocus system is then used to determine the distance to the second subject. The computer then selects the aperture value that will give the required depth of field, and a shutter speed that will ensure correct exposure. When explaining this function, keep in mind that your prospect has little if any experience with SLR photography. Communicate how this feature gives easy control both over fast-moving subjects (the user can set a focus zone and then shoot as the subject enters the zone), and depth of field for a sharp subject on film.

CANON EF lenses Another significant advantage of the development of EOS system was the the availability of a new series of Canon EF lenses. The larger diameter of the lens mount has enabled possibilities of a breed of fast lens speed optic never possible with 35mm photography.

With the EOS system, Canon camera uses can take advantage of interchangeable lens flexibility and professional-level lens quality offer by the EF optic. Unbeatable combination of precision craftsmanship, professional-level quality and leading-edge technology are hallmark of the Canon EOS autofocus lenses. The EF lens family has around 14 lenses with a teleconverter debuted with the EOS 650 in 1986. It has hence, mushroomed as the largest autofocus system in 35mm photography with (up to 1996) more than 10 million of EF lenses sold worldwide ! Canon Autofocus EF Lens Resources

Some of the industry's best optical lens such as the classic ultra fast Canon EF 14mm f/2.8L, EF 24mm f/1.4L, EF 35mm f/1.4L, EF 50mm f/1.0L, EF 85mm f/1.2L, TS-shift lenses at three focal lengths, high-performance super telephoto lenses at popular focal lengths of 200mm, 300mm, 400mm, 600mm which Canon EF lens family each has a world class performer at respective essential focal length and not to mention some classic trend setting ultrawides zoom lenses like Canon EF 17-35mm f/2.8L, Canon EF 28-85mm f/2.8L were almost made like a standard lens among many news and sports photographers.

A lense data chart of Early Series of Canon EF lenses (159k pdf file)
A Pictorial Illustration of various early EF lenses Series (700k pdf file)

The EF lens and the EOS camera body is two integral systems that supplementing each other. You may use the table below to see comparison between Canon and other camera manufactures and probably it can help you to understand the significant advantages of the Canon system presents.

CANON LENS-INTEGRAL DESIGN VS. BODY-INTEGRAL SYSTEMS

Item	Motor in Body	Motor in Lens
		Other Manufacturer's Choice		Canon's Opinion & Choice
Body shape			No significant difference		Increased flexibility without motor-mechanism coupling
Lens shape		-	Large, heavy, and irregular (bulging)		With proper motor placement, weight and size do not differ significantly from ordinary lenses or the tubular shape
Performance			No difference in general characteristics		Fast & q quiet- regardless of lens focal length of the lens in use
Operability		-	Various restrictions make development of efficient motors difficult		Development and use of AFD, USM and EMD maximize operational efficiency
Cost		-	Expensive overall system		Lower body cost, lens cost increase eliminated by lack of coupling mechanism
Future prospects		-	Difficult to upgrade because of body and lens limitations		No restrictions imposed by mechanical coupling freedom to replace mechanical structure with electronics and full adaptability to the future
Each Canon EF lens has two completely new, circular motors, one for autofocus and the other for aperture control. For autofocus, the lens has either the AFD (Arc Form Drive) or USM (Ultrasonic Motor), and for aperture control the EMD (Electro- Magnetic Diaphragm). Thanks to these Canon-developed motors, the EF lenses retain the smooth, round shape of the traditional camera lens, are very fast, and offer extremely high accuracy. Symbols: Excellent Good

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Technical Specifications - EOS 650
| Instruction Manual for EOS620/650 - External Link

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Additional information on other EOS AF-SLR Models:
EOS-650 (1987.2) | EOS-620 (1987.5) | EOS-750QD (1988.10) | EOS-850QD (1988.10) | EOS-630QD (1989.4) | EOS-1 (1989.9) | EOS-RT (1989.10) | EOS-700QD (1990.3) | EOS-10S QD (1990.3) | Canon T-60 | EOS-1000F /RebelS QD (1990.9) | EOS-100 / Elan QD (1991.9) | Canon EF-M (1991.9) | EOS-5/A2E QD (1992.10) | EOS-1000FN /Rebel S II QD (1992.4) | EOS-500 / Rebel XS / KISS (1993.10) | EOS-1n (1994.9) | EOS-888/5000QD (1995.1) | EOS-1n RS (1995.3) | EOS-50/50E / Elan II(E) /EOS 55 (1995.9) | EOS -500N / Rebel G / KISS II (1996.9) | EOS-IX (1996.10) / EOS-IX Lite /IX-7 (1996.3) | EOS-3 (1998.11) | EOS-88/3000 (1999.3) | EOS-300 / Rebel 2000 QD / KISS III (1999.4) | EOS-1v (2000.3) | EOS-30 / EOS-7 / EOS Elan 7E (2000.10) | EOS-3000N /EOS-66 / Rebel XS-N (2002.2) | EOS-300V / Rebel Ti / KISS V (2002.9) | EOS 3000V / Rebel K2 / KISS Lite (2003.9)

Flash Photography:- Part 1 | 2 | 3 | 4 - Canon 540EZ site
Selective Canon TTL Flash Models:- 160E | 200E | 300EZ | 300TL | 420EZ | 430 EZ | 480EG | 540EZ | Macrolites | Other non-TTL Canon flash models
Others: | Canon RS-60E3 Remote Switch | Canon RC-1 Remote Control | Canon RC-2 Remote Controller | Canon TC-80N3 Timer Remote Controller |

| Message Board | for EOS-1 Series SLR Camera Models
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| Message Board | Specifically for Dispose or Looking for Canon Photographic equipment

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Credit: To all the good people who has contributed their own experience, resources or those who are kind enough granting us permission to use their images appeared in this site. Site concept & design: leofoo® MIR Web Development Team. Copyright 2002. Members of the EOS Site Maintenance Team : Philip Chong, CYLeow, Vincent Thian. images handling on EOS models: EeWyn; Setup, coordination by: Wati. Mirza. *Credit: Mr. Richard Yeow & Mr. Simon Wong from camera division of Canon Marketing, for their continual effort in supporting development of this EOS/EF website. Note:certain content and images appeared in this site were either scanned from official marketing leaflets, brochures, sales manuals or publications published by Canon Inc. over the years and/or contribution from surfers who claimed originality of their work for educational purposes. The creator of the site will not be responsible for may discrepancies arise from such dispute except rectifying them after verification."Canon", "EF lenses" & "EOS" are registered tradenames of Canon Inc., Japan. Site made with an Apple IMac.