Additional Information on Zuiko Lenses
MF Zuiko Wideangle Zoom Lense 75-150mm f/4.0

 
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Zuiko AUTO-Zoom 75-150mm f/4.0

This is Olympus first zoom lense and possibly one of the best selling one as it has been offered as the sole lense type in the Zuiko lens system which can trace back as early as 1974. At the time where many photographers still believed that a zoom lense is bulky, heavy and has resolving powers inferior to those lenses in fixed focal length. However, technological advancement in both optical design, newly introduced optical glass types and mechanical configurations has enabled it possible to design zoom lenses that were compact. lightweight, and be able to deliver high image quality. The convenience provides in this lense in saving time changing lenses and ability to change quickly from one focal length to another without changing the camera position has truly opened up many photographic opportunities never dreamt possible previously for OM photographers.

<<< -- Credit: Image courtesy of Mr Jerry "cameras plus®" <camerasplus@earthlink.net> with a operating business URL at Tripodsplus.com. Image Copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.
With an ordinary lense, the angle of view changes only slightly because its focal length is fixed, A zoom lense, on the other hand, is specially designed to allow the photographer to freely very the focal length. This enables him to produce the effects of many telephoto lenses. Because of the unique optical design, subjects remain in focus throughout the zoom range and the photographer can expect the high resolution and contrast once associated only with fixed focal length lenses. Designed with an extremely compact, lightweight and easy to operate concept, this Zuiko zoom is convenient for general photography such as portraits, landscapes, particularly efficient when shooting mountain scenery from a tight place as well as general photography. It was so compact that it even accepts OM standard 49mm filters.

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This tele-vario Zuiko lense was also the the standard creator where how other subsequent OM zoom design was adopted. The lense separate into three segments in independent control for focusing, zooming and aperture setting. The design defies normal OM lense handling with the aperture ring rests very close to the shutter speed ring near the lense mount. Although it sounds odd but the locations for control are very logical where you will have all the essential control for image making procedures position conveniently for quick and easy access.
<<< -- Credit: Another image contributed by Mr Jerry "cameras plus®" <camerasplus@earthlink.net>. Image Copyright © 2003. All rights reserved.

It is not just logical but also very practical during operation because the focusing ring at the front section comes with a large, easy to grip, slip-free small diamond-shapes hard rubberized covered grip that has relevant distance scales in both feet (in orange) and metric scales printed onto it for easy visual reference. The center portion is where the separate zoom ring where is has a different ridged rectangular grip design that provides a different feel for photographer even without having to remove his eyes from the viewfinder to distinguish it easily from the focusing ring, the zoom ring provides various indicative focal length settings (in green) where five settings from 75mm, 85mm, 100mm, 125mm and 150mm are clearly illustrated on the barrel. On the other hand, the aperture ring which is narrower among all is located just next to the chrome lense mounting ring where the stopped down button and aperture/lens mounting index locates. This native OM zoom design has been made as the standard Zuiko zoom configuration since then and virtually all subsequent two touch tele-zooms introduced at later stage carry with this basic exterior design.

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Pictures shown a newer and older version of the 75-150mm Zuiko zoom. Note inscription of lens data .

<<< -- Credit: Image at far left courtesy of Mr Jerry "cameras plus®"; Image at left courtesy of Mr. Emanuele "ebay-camera$®" <emanue20@pacbell.net> Both images Copyright © 2003. All rights reserved.

The tele-Zuiko lense uses an original OM optical design which comprises of 15 elements in 11 groups and has been literally remained unchanged for nearly 30 years since its debut. It has not been indicated clearly whether the lense was multicoated but given its complexity in the number of lens elements used, probably it was - may be minus the very early versions. However, as those which shipped after 1984 carry a well indicative "MC" letter provided in its lens data, so we would assume all units shipped since then must have been multicoated. Covering a frequently used, popular telephoto range from short to medium focal length, the Zuiko tele-zoom only weighs 430g (15.2 oz.) and has a length measuring only at 115mm (4.5") - which makes it highly portable for location use and/or traveling. Olympus has incorporated a delightful feature in a built-in retractable lens hood design which eliminates any need of carrying an additional lense accessory. The lense hood has quite a long physical extension when pull out and it is equally effective to provide as a good lense shade during backlit shooting.

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It shines in operation too as, remarkably, this Zuiko lense can close focus to a minimum distance of just 1.6m where an automatic correction mechanism against close distance aberrations has been incorporated within the optical design to enable its high quality optical performance be extended to close-focus range - An exceptional value for such a zoom lense, and probably, it was one of the main reasons that has contributed to its widespread popularity over the years.

Spider Rock, Canyon de Chelly National Monument

<<< -- Credit: Image courtesy of Mr JOEL Wilcox® <jowilcox@blue.weeg.uiowa.edu>. Joel has an excellent landscape photographic website on his own. Image Copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.

Technical Specification for Zuiko AUTO-Zoom 75-150mm f/4.0

Lense type:
two touch tele-zoom design
Focal length: 75-150mm
Maximum aperture: 1:4.0
Lens construction:
15 elements in 11 groups
Picture angle: 32° (f=75mm) - 16°(f=150mm)
Diaphragm:
Automatic, full aperture metering
Aperture scale: f/4.0~ f/22
Distance scale: Graduated in meters and feet from 1.6m
(5' 2-3/8") to infinity (oo)
Focusing: Revolving helicoid system, by turning the focusing ring
Zooming: By rotating movement via the zooming ring locating at the center
Filter attachment size / Filter(s): 49mm, Screw-in type

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Lens hood: Built-in retractable hood design
Minimum Photographic range: 64cm x 42cm@75mm; 21cm x 32cm@150mm
Length:
115mm (4.5")
Maximum diameter:
63mm (2.5")
Weight:
430g (15.2 oz.)
Others: Automatic correction mechanism against close distance aberrations

<<< -- Credit: Image courtesy of Mr. Emanuele "ebay-camera$®" <emanue20@pacbell.net> who operates a popular Ebay Store. Both images Copyright © 2003. All rights reserved.

Recommended Focusing Screens: 1-1*, 1-2*, 1-3*, 1-4*, 1-5#. 1-9*. 1-10*, 1-13* and 1-14*. * Compatible. #Can be used. They 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.

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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 |

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The middle picture with the built-in lense hood extended. A large lens case is also provided as standard accessory.

<<< -- Credit: Images courtesy of Mr Michel Freylich® <mic67@qc.aira.com> Image Copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.

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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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.