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Additional information on Canon EF tele-zoom lens - EF 100~200mm f/4.5

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Canon EF 100-200mm f/4.5A Tele-Zoom lens
Marketed: 12.1988; Discontinued: probably 1992

Background: Canon used to have a FD version of the FD 100-200mm f/5.6 S.C. but it was not very popular as the FD 85-300mm f/4.5 S.S.C. or the subsequent Canon FDn 100-300mm f/5.6(L) zoom lenses. But all those "oldies" did laid a path for better things to come when the EF/EOS system was officially introduced back in 1987.

Canon FD zoom 100-200mm f/5.6 Canon FD zoom 100-200mm f/5.6 rear mount
In December, 1988 Canon surprised the photo community by introducing two EF zooms with a new lens type that omitted the manual focus control in the otherwise conventional design of a typical zoom lens.
Equally interesting is, other than the Canon EF 35-70mm f/3.5-4.5A, which has a more popular zoom range at 35-70mm, the next zoom was considered as rather "odd" as the early EF lens family, a few zoom lenses such as the Canon EF 70-210mm f/4.0 AFD, EF 80-200mm f/2.8L AFD; EF 100-300mm f/5.6(L) AFD had the focal length between 70-300mm well covered and the implementation of this "experimental tele-zoom" lens without manual focus control was quite unconventional in its approach. In fact, in 1988 Canon has began stepped up with the EOS system by introducing a series of EF lenses which individually never short of excitement, among them were Canon EF 200mm f/1.8L USM, Canon EF 24mm f/2.8, Canon EF 600mm f/4L USM, Canon EF 35-70mm f/3.5-4.5A, Canon EF 28-70mm f/3.5-4.5 II, Canon EF 35-135mm f/3.5-4.5 and Canon EF 50-200mm f/3.5-4.5L. You may take notice there was also another similar "A" lens type (without manual focus control ring) in the Canon EF 35-70mm f/3.5-4.5A introduced the same year in 1988.

Canon EF 100-200mm f/4.5A Zoom lens side view
Designed for use with virtually all EOS cameras (errr .. except for the Canon EF-M), the EF 100-200mm f/4.5A is a compact zoom lens which produces high-quality action, portrait, and landscape pictures as the f/4.5 maximum aperture provides good, all round usage. The light weight design makes it the perfect zoom lens for travel. But the most appealing element of this zoom lens is, it is also very affordable, due to its simplified lens design (no manual focusing). Lens stability is maintained throughout the focal range of the EF 100-200mm f/4.5A due to its simplified construction. Even for seasoned EOS users may not get used to design of this zoom as it does not has a distance window for visual reference.

I guess for people who may be seeking for a longer focal length tele-zoom would be more interested in the 100-300mm f/5.6 versions; but on and off, this zoom lens does surfaced regularly in the used market and I would think it was once quite a popular lens among the many entry EOS photographers back in the late '80.This Canon zoom has no USM configuration and the AF actuator is a Arc-Form Drive (AFD) motor which provides reasonably fast, accurate autofocusing. And, as with all Canon EF lenses, the Electromagnetic Diaphragm (EMD) control allows for precise electronic control of aperture settings. While Canon's super spectra coating enables images to be reproduced with true-to-life color. One of the good thing about this zoom is its maximum magnification which reaches 0.13X and eliminates the needs for close-up accessory should the situation requires for close-up shots.

Anyway, Canon was not alone in providing a 100-200mm 2X zoom ratio tele-zoom, as rivaling Company like Konica-Minolta also used to has a similar Minolta AF 100-200mm f/4.5 zoom lens for the Maxxum class AF SLRs with the same aperture of f/4.5 as the Canon. There ain't much info you can gather for this Canon old zoom (even Canon Museum has no picture to illustrate other than bare basic information on lens data). Well, here - I would think some good illustration of photos taken by this lens is welcome for this site.

Technical Specification for Canon EF 100-200mm f/4.5A AFD Telephoto-Zoom: -

Type: - Autofocus tele zoom lens type
Focal Length: Variable zoom range from 100mm- 200mm
Focus Adjustment:-
Autofocus type ONLY
Manual Focusing:-
NOT possible
Zoom Adjustment:- Ring controlled zoom action
Closest Focusing Distance:-
1.9m (6 ft) Maximum Magnification:- 0.13X

Canon EF 100-200mm f/4.5A lens data on barrel Zoom control ring EF 100-200mm f/4.5A
AF Drive (motor) System:- AFD (Arc Form Drive)
Depth of Filed Scales: NOT provided
Functions; AF, AE operation, Auto Aperture, Full Aperture metering.

Infrared Marks: nil
Angle of View:- 24°' ~12°
Aperture range:- f/4.5- f/32
Minimum Aperture: - f/32
Lens construction:-
10 elements in 7 groups
Lens Coating: Super Spectra
Filter rotation: yes
Filter Attachment Size
:- 58mm front mounting
Diaphragm: 8 blades
: Electromagnetic Diaphragm (EMD)
Extenders: Not advisable
130.5mm x 74.4mm
:- 520g (approx. 18oz.)

Discontinued Canon Product icon
Accessories:- lens hood:- ET-62, Lens Cap: E58; hard case: LH-C19; Soft case ES-C17; 58mm; close-ups Lens 500D; Lens Dust Cap E Rear Cap, Gelatin Filter Holder Adapter usage: NO info.

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