Additional Information on Zuiko Lenses
MF Zuiko tele-zoom lense 35-105mm f/3.5~f/4.5

 
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Zuiko AUTO-Zoom 35-105mm f/3.5~f/4.5 MACRO

If I can recall it correctly, it took a third party lens manufacturer to start offering wide-to-tele zoom lens with variable apertures and a macrofocus design. Although most major camera/lens manufacturers were a little skeptical to follow on with such concept but when they realize photographers have not been entirely rejecting these kind of design, they soon followed. So the beginning of the '80 saw numerous of these lenses started flooding the market. Basically, a typical design of such lenses carries a zoom zoom range from wideangle extends to medium telephoto, they usually carries an opening aperture from f/3.5 to f/.4.5 at its longer focal length or we called "variable lens speed" feature (it provides a reasonably bright f/3.5 at the wideangle setting but gradually stopped down to a dimmer f/4.5 when reaches the telephoto range) - although not very desirable to a seasoned photographer, but it enables the lense to be able to make more compact and lightweight. Further, many of these lenses also offer a macrofocus design where usually a reproduction ratio between 1:5 to 1:3 are also provided.

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Although all the features are not very desirable but these lenses were quite popular because they offer a good compromise in their design in performance, wider working zoom range, effective lense speed and more importantly, they are also affordable to many.

<<< --- Credit: This image was specially taken by Mr. Jone Quinn <yahuhai@yahoo.com> for this OM project. Jone Quinn runs a popular Ebay Store and he specializes in selling OM photo gears. Image copyright © 2003 All rights reserved.

Introduced around 1983/4, the Zuiko AUTO-Zoom 35-105mm f/3.5~f/4.5 MACRO falls into such designing concept. This small and light 3X zoom lens covers the range from 35mm wide angle (63°) to 105mm medium telephoto (23°), giving outstanding versatility in photography from interior, portrait, nature and other general photography. It has a built-in close focusing mechanism allows simple close-up operation at every focal length, providing a minimum focus of 31cm at (f-35mm), at such distance, a maximum reproduction ratio of 1:5 is reachable. The maximum aperture is fixed at f/3.5 for the wideangle setting and slowly closing down to f/4.5 when reaches 105mm. One touch zooms does have some delightful touch, for an instance, the depth of field scales (and red infrared index) are easily to use and clearly defined and the focal length indicators is printed clearly on the lens barrel for easy reference as you zoom. However, in the case of the aperture index, it may be a little confusing to use, as the respective aperture indexes may shift as you zoom !

Setting the Aperture Ring The effective aperture of this lens varies continuously depending on the change in focal length (e.g., its maximum aperture is f/3.5 at 35mm focal length and f/4.5 at 105mm). When exact setting of the aperture ring Is required as in flash photography, set the desired f/stop opposite the white index line (when you set the zoom ring at the 35mm position) or the brown dot (when using the 105mm setting). if you are using a focal length between 35mm and 105mm, set the desired f/ stop between the two index marks.

An old Mini-cooper's headlamp... a temporally substitute image till someone contributes his/hers. Copyright-free images collection leofoo®

I am not sure whether how OM users perceive with the introduction of this lens (I should think it was quite well received), probably it was the first time Olympus has managed to offer a wide-tele zoom lens with a good range from wide-angle to a medium telephoto setting of 105mm with a useful close-range focus mechanism. One reasons that contributed to its early popularity among the many amateur photographers also due to lack of adequate product knowledge in the "variable lens speed" feature it offers. But such design has also raised some negative reaction from seasoned photographers to see its true effectiveness and practicality. Nevertheless, this lens can still be regarded as a good zoom which offers many attractive basic features. Whatever it is, the introduction at the time was timely as prevailing trend during those days as smaller, lighter zoom lenses with a variable opening apertures was the only solution to meet such marketing/designing objective.

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Focal length indications have 35mm, 50mm, 70mm and 105mm clearly printed in green. The macrofocus needs to turn a separate close-focus ring. Many zoom lenses appaered during that period carry such a design.

<<< --- Credit: Image courtesy of Mr. Jone Quinn <yahuhai@yahoo.com>. Jone Quinn runs a popular Ebay Store and he specializes in selling OM photo gears. Image copyright © 2003 All rights reserved.

The radical change in such designing concept of one touch zoom/focusing control saw many subsequent Zuiko zoom lenses introduced between 1983 -1986 adopted a similar design. Some examples are Zuiko AUTO zoom 50-250mm, S.Zuiko AUTO zoom 70-210mm, S.Zuiko AUTO zoom 100-200mm. However, among the few, they do differ in how the Close Focusing feature is operated. In this lense, to take close-up shots beyond the reach normally available by the focusing ring: Unlock the close-focusing ring by pushing its switching button inward and slightly twisting the ring in the direction of the arrow. Rotate the ring until: the subject image in the viewfinder becomes crisp and clear, white operating the zoom/ focusing ring. The closest permissible focusing distance of the lens is 0.31m (12") and at this distance, an impressive magnification of 1:5 is extended to the entire zoom range. Please Note: As with other zooms carrying same purpose, as and when the close-focusing mechanism is utilized, the distance scale, depth-of-fleld scale, infrared index mark and focal-length scale CANNOT be used.

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Conclusion: It is indeed very hard to conclude whether this is the right lense for you as everyone has their own types/interest of photography. But overall, I can safely recommend this lense as it packs some very useful features in its design. The lense has excellent handling characteristic (except at the shift in aperture index section) and balances very well with the compact dimension of most OM SLR bodies; the macrofocus feature is good enough for many photographic applications that may call for such needs but falls short from true macro photography, it is compact, reasonably lightweight (470g) and performs very well optically. With a suggested list price at about USD270.00*, it seems to be a little on the high side, may be prices of used units between USD220.00* - USD235.00* are more reasonable to allow you to consider taking one as an all round traveling companion optic for your OM camera *Source: MacBroom's Camera Blue Book.).

<<< --- Credit: Image courtesy of Mr. Jone Quinn <yahuhai@yahoo.com>. Jone Quinn runs a popular Ebay Store and he specializes in selling OM photo gears. Image copyright © 2003 All rights reserved.

SUPPLEMENTS: Contributed by Mr. Simon Evans <ruralwales@yahoo.com>

There were two versions of the 35-105 (incidentally, rumoured to be based on the Tokina 35-105/3.5-4.5 RMC lens). Some of the differences:

S/N <500,000: 460g (16.3 oz), 106mm long extended, 86mm long retracted, focusing grip 42mm wide, infrared focusing dots (red) above aperture ring and below 105 on distance scale barrel, no variable aperture dot, rear element flat and nearly flush with back of lens.

S/N >500,000: 470g (16.7 oz), 107mm long extended, 87mm long retracted, focusing grip 38mm wide, no infrared focusing dots, variable aperture dot (white) between 3.5 and 5.6 on aperture ring, rear element recessed and convex."

On this later model the aperture closes when an aperture smaller than 3.5 is selected (the Zuiko 35-70 f3.5~4.5 has the same feature). Lens tester Gary Reese concluded they have slightly different optical formulae.

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Technical Specification for Zuiko AUTO-Zoom 35-105mm f/3.5~f/4.5 MACRO

Lense Type:
One touch wide/tele-zoom design
Focal length: 35-105mm
Maximum aperture: 1:3.5~4.5
Lens construction: 16 elements in 12 groups
Picture angle: 63° (f=35mm) - 23°(f=105mm)
Diaphragm:
Automatic, full aperture metering
Aperture scale: f/3.5~ f/22

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Distance scale: Graduated in meters and feet from 1.5m (5.0 ft) to infinity (oo) with close focus capability (see below)
Focusing: Rotating focusing helicoid system, by turning the focusing ring
Zooming: push and pull control via the single zooming/focusing ring
Filter attachment size / Filter(s): 55mm, Screw-in type

Lense hood: Rubberized 55mm screw-in type
Minimum photographic range:
86 x 129cm (33.9" x 50.8") (f=35mm) ~ 30 x 45cm (11.8" x 17.7") (f =105mm); at close focus: 12 x 18cm (4.7" x 7.1 ") (f=35mm) 17 x 25cm (6.7" x 9.8") (f=105mm)
Maximum reproduction ratio: 1:5 @ its closest focusing distance at 0.31m (12")
Length:
85mm (3.3")
Maximum diameter: 64mm (2.5")
Weight:
470g (16.6 oz.)

Recommended Focusing Screens: 2-4**, 2-13**,1-1*, 1-2*, 1-3*, 1-4N**, 1-6#, 1-10*, 1-13* and 1-14*. * Compatible. #Can be used. The 1-6 (microprism-clear field type) will provide for accurate and easy focusing but meter built into the OM-1 and OM-2 (on MANUAL) will not indicate correct light readings. With the OM-2 on AUTO, correct exposures are made on the film, but the meter needle does not give correct light readings.** Compatible, only with applicable OM bodies introduced at later stage

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Zuiko AUTO-Zoom Lenses - Main Index page

| S-Zuiko AUTO Zoom 28-48mm f/4.0 | Zuiko AUTO Zoom 35-70mm f/3.6 | S-Zuiko AUTO Zoom 35-70mm f/4.0 | Zuiko AF AUTO Zoom 35-70mm f/4.0 | S-Zuiko AUTO Zoom 35-70mm f/3.5 ~ f/4.5 | S-Zuiko AUTO Zoom 35-70mm f/3.5 ~ f/4.8 | Zuiko AUTO Zoom 35-80mm f/2.8 ED | Zuiko AUTO Zoom 35-105mm f/3.5 ~ f/4.5 | Zuiko AUTO zoom 50-250mm f/5.0 | Zuiko AUTO zoom 65-200mm f/4.0 | S-Zuiko AUTO zoom 70-210mm f/4.5 ~ f/5.6 | Zuiko AUTO Zoom 75-150mm f/4.0 | Zuiko AUTO Zoom 85-200mm f/4.0 | Zuiko AUTO Zoom 85-250mm f/5.0 | S-Zuiko AUTO Zoom 100-200mm f/5.0 |

<<< --- Credit: Image courtesy of Mr. Jone Quinn <yahuhai@yahoo.com>. Jone Quinn runs a popular Ebay Store and he specializes in selling OM photo gears. Image copyright © 2003 All rights reserved.

A Brief overview on Zuiko Optics
Zuiko Fisheye Lenses
8mm f/2.8 Circular Fisheye | 16mm f/3.5 Full Frame Fisheye
Zuiko Ultra-Wideangle Lenses
18mm f/3.5 | 21mm f/2.0 | 21mm f/3.5 | 24mm f/2.0 | 24mm f/2.8
Zuiko Wideangle Lenses
28mm f/2.0 | 28mm f/2.8 | 28mm f/3.5 | 35mm f/2 | 35mm f/2.8 |
Zuiko Standard Lenses
40mm f/2.0 | 55mm f/1.2 | 50mm f/1.2 | 50mm f/1.4 | 50mm f/1.8 | Zuiko 50mm f/2.0 PF
Zuiko Medium-Telephoto Lenses
85mm f/2.0 | 100mm f/2.0 | 100mm f/2.8 | 135mm f/2.8 | 135mm f/3.5
Zuiko Telephoto Lenses
180mm f/2.0 EDIF | 180mm f/2.8 | 200mm f/4.0 | 200mm f/5.0 Auto-T (brief)
Zuiko Super-Telephoto Lenses
250mm f/2.0 EDIF | 300mm f/4.5 | 350mm f/2.8 EDIF | 400mm f/6.3 | 500mm | 600mm f/6.5 |1000mm f/11.0
Special application Zuiko optics:
24mm f/3.5 Shift | 35mm f/2.8 Shift | 500mm f/8 Reflex | AF Zoom 35-70mm f/4.0 | Zuiko 50mm f/2.0 PF

Tele-Converters: 1.4X-A / 2X-A

Zuiko Macro/Close focus lenses: Zuiko AUTO MACRO 20mm f/3.5 | Zuiko AUTO MACRO 20mm f/2.0 | Zuiko AUTO MACRO 38mm f/3.5 | Zuiko AUTO MACRO 38mm f/2.8 | Zuiko AUTO MACRO 50mm f/3.5 | Zuiko AUTO MACRO 50mm f/2.0 | Zuiko AUTO MACRO 1:1 80mm f/4.0 | Zuiko AUTO MACRO 90mm f/2.0 | Zuiko AUTO MACRO 135mm f/4.5

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About this photographic site.

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Copyright © 2000. leofoo ®. MIR Web Development Team.

Maintainers for OM Zuiko Site & Message Board: Rick Oleson (Email: rick_oleson@yahoo.com Website: http://rick_oleson.tripod.com), Bruce Hamm (bhamm@magma.ca), John Orrell (john@orrellj.freeserve.co.uk), Simon Evans, (http://www.mawddwy.freeserve.co.uk); Shaun (shaun@noemail.com), Andy Radcliffe (AndyJRadcliffe@manx.net)

Special thanks to: Gregory P. Logiodice, Bob Gries, Erwin Voogt, Joel Wilcox, Rick Oleson, Simon Evan and many others for granting permissions to use their images of either lenses, cameras and own pictures appeared in this Zuiko website.

Credit: My old time buddy, Ahmad Ikram, Dr of Rubber Research Institute (RRI), Malaysia who shares the same passion with me and also lending his OM-1n, OM-4 and the Motor Drive 1 to me for preparing some images in this site; Mark Dapoz <md@dementia.org>for reminding some broken links; Mr Poon of Foto Poon, Ipoh, Mr Richard, Ampang Park, Mr Lim and Miss Jenny of Foto Edar for their generosity for their OM1(n), OM2n camera and some Zuiko lenses. Mr Hans van Veluwen for mistakenly using some content earlier from his OM website; J Sorensen for providing some useful images to rectify some technical "flaws"; Mr Gen Holst for helping during the early stages of development of this OM site; Mr KKLow for some of his earlier images on the OM-1appeared in this website; Miss Wati and Mirza for helping me to convert this Operation Manual into a HTML format. Mr MCLau for rectifying some mistakes made on the earlier preview sites. A personal tribute to the creator of the OM system and also a site dedicated to all the fans of Olympuses and Zuiko Optics worldwide. Some of the content and images appeared in this site were scanned from OM official marketing leaflets, brochures and instruction manual(s) for educational purposes. Olympus is a registered trade name of Olympus Optical Inc., Japan. Site created 'unfortunately again with an IMac.