Additional information on Olympus Zuiko Lenses
Zuiko wideangle lenses at 28mm focal length - Part I

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Regardless for day-to-day usage and/or professional application - 28mm focal length can easily be regarded as one of the most practical all round wideangle lense. When compared with alternate popular 35mm focal length, lenses at 28mm focal length provides a wider picture angle, while on the other hand, there is less tendency to exaggerate perspective as compared to 24mm ultrawides. As everyone has individual preference in how to make good use of lenses in their photography, if you are undecided which wideangle is best suit your type of photography; take a look through viewfinder of your camera with a 28mm lense and you will notice image projection with a 28mm lense provides a more pronounced perspective than lenses at 35mm focal length. The main advantage of a 28mm lense is in its ability to capture a fairly large subject area without creating undue concern over its perspective rendition. I have always thought a 28mm lense is a more logical wideangle to a comparing 35mm for all round photographic requirement. Comparison of various angles of view in three 24mm, 28mm and 35mm lenses should give you a rough idea of how a 28mm behaves optically.

A comparative chart in angles of view between 24mm, 28mm, 35mm wideangle lenses
















54° * More .....

OM ZUIKO wideagle lens 28mm f/2.0 taken by Mubeen  from
<<< --- Credit: Images courtesy of Abdul Mubeen Mughal® <>. You can visit his portfolio his PORTFOLIO at Image copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.

For an instance, when taking a group portraits at a any common PR-type photographic session, you will appreciate its slightly broader picture coverage this lense provides. A comparing 35mm wideangle, on the other hand may be only good for covering a small group of 4-5 persons while keeping image size adequately big enough. A 28mm wideangle extends such picture coverage wider in enabling more people to be included while maintaining good utilization across the picture area. The trick is actually maintaining a close relationship with the subject you are shooting and not wasting too much area in the picture frame. Perhaps the only area you may have to take note is, at times when you work in too closely to take a frame filling shot, human figures, in particular position at extreme edges of the picture frame will be slightly distorted - so always ensure the level of distortion is within acceptable range. Another equally important factor is, most reasonably good auto thyristors flash (regardless it is a third party label or such as the dedicated OM Olympus T32 flash unit will have a 28mm's diagonal picture angle of 75° coverage well illuminated. There are three Zuiko 28mm wideangles, each with varying lens spec in lens speed, dimension and cost to serve OM photographers, we will go through them one by one in sections that follows:

28mmf2LingOMa.jpg 28mmf2LingOMb.jpg
I-Zuiko Auto-W MC 28mm f/2.0

With its extraordinary maximum lens speed at f/2.0, this ZUIKO lense ranks among the fastest MF 28mm wideangle lense in the market.

<<< --- Credit: Images courtesy of C.H.Ling® <>. Incidentally, CH Ling also maintains an excellent OM resource site on his own. Image copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.

This remarkable fast speed ZUIKO wideangle was believed to have been among the early batch of Zuiko lenses introduced with the OM 35mm SLR system (probably not entirely accurate with this remarks as it may not have been made available with the original Olympus M1 body but could well be introducing between year of 1973/74 as Rick's compilation database suggests. By the time the OM-2 was officially introduced, this lense was already listed in the Zuiko lense section in an OM-2 sales catalogue). This retrofocus design Zuiko wideangle uses a unique 9 elements in 8 groups optical design which aims to minimize common aberrations such as distortion, astigmatism, coma and curvilinear aberrations commonly found in design of fast speed wideangles while at the same time, offers an exceptional compact dimension- It weighs merely 245g - easily one* of the lightest in its class.

simontrumpet.jpg by Simon Evan ...
One of the technical highlight of this lense is the use of floating elements system (so called " close range optical correction system") which has the lens elements move and compensate when focusing at close distance. Since most lenses are designed to perform their best at infinity and when focusing at their nearest focusing distance, the optical performance usually starts deteriorates, and thus, Olympus optical engineers incorporated an mechanism internally to move certain optical lens groups when the lense is used at its nearest/longest extension,

This design has helped greatly to ensure high optical performance be extended at its closest focusing distance. There are not too many ZUIKO wideangles have such system incorporated, the Zuiko 28mm here is one of them, it can close focus to 30cm. In terms of dimension, Strangely there are some inconsistency relating to the published data between old and newer versions even though they share virtually same optical construction of 9 lens elements arranged in 8 groups where the newer lense weighs lighter than the older I-Zuiko AUTO-W 28mm f/2.0.

<<< -- Credit: Image courtesy of Mr Simon Evan®. Simon has a website on his own. He also co-maintains the popular OM Message Board in PIM site. Image Copyright © 2003. All rights reserved. Please respect the visual property of the contributing photographer.

Overall, this retrofocus type Zuiko wideangle lense is a lovely lense to own and use. Combining good factors in its unusually fast lens speed of f/2.0, good wide vision in picture coverage and reasonably compact in size for its speed, high resolving power with high contrast across its entire apertures and focusing range. A special correcting lense group compensates for aberrations at close focusing distances. It is an excellent lense for night photography with or without flash, and for shooting in cramped interiors under low available light conditions. Despite all these, yet the lense accepts 49mm threaded filters. It is an excellent wideangle to supplement OM photographers who may have own a 21mm ultrawide. From a user's point of view, the less desirable point for consideration is perhaps - PRICE, as it has a price tag more than double than a comparing high performance Zuiko 28mm f/2.8 counterpart with a f-stop slower in lens speed.

* The lightest MF 28mm f/2.0 wideangle lense produced by a major camera/lense manufacturer was a Asahi Pentax's SMC 28mm f/2.0 which weighs only 215g (7.5oz). Next, the first Zuiko 28mm f/2.0 lense that beared "MC" in its lens data was believed to have been introduced in 1978.

Relative: Early Canon's FD 28mm f/2.0 S.S.C., Nikkor-N 28mm f/2.0 Auto

Specification for Zuiko Auto-W MC 28mm f/2.0

Older Version:
I- Zuiko AUTO-W 28mm f/2.0
Current Version:
Zuiko Auto MC 28mm f/2.0
Focal length: 28mm
Optical construction: 9 elements in 8 groups
Angle of view: Diagonal: 75°
Distance Scale
: (m) 0.3 (1 ft) to infinity

<<< -- Credit: Image courtesy of Mr Alan House® <> who also operates a popular Ebay Store. Image Copyright © 2003. All rights reserved.

Minimum photographic range: 18cm x 27cm (7.0" x 10.6")
Focusing: Straight Helicoid
Maximum & Minimum aperture range: f/2.0 - f/16
Diaphragm: Automatic
Filter Size. 49mm

Length: 43mm (1.7")
Maximum Diameter: 60mm (2.4")
Weight: 245g (8.6oz); older version: 240g (8.5 oz.)
Filter attachment size/Filters: 49mm screw-in
Others: Automatic correction mechanism against close distance aberrations

OM ZUIKO wideagle lens 28mm f/2.0 taken by Mubeen  from
Recommended Focusing Screens: 1:1*, 1:2**, 1:3*, 1:4*, 1:5# 1:10*, 1:13*, 1:14*
*Compatible. Focusing and exposure accuracy remains # Can be used, they provide accurate focusing but exposure error may occur in manual mode for OM1 and OM2 series models. Compatible. Focusing and exposure accuracy remains. ** Compatible, Focusing and exposure accuracy remains intact but microprism, corners of the screen and split image may darken. # Compatible with OM-1(n) and Om-2(n), may be used on OM-3(ti) and OM-4(ti) or equivalent, they provide accurate focusing but exposure error may occur in manual mode.## More info on "Picture Angle" or make use of the Glossary section in PIM site..
<<< --- Credit: Images courtesy of Abdul Mubeen Mughal® <>. You can visit his portfolio his PORTFOLIO at Image copyright © 2008. All rights reserved. Please respect the visual property of the contributing photographer.

| Previous | NEXT | 1/2 The alternate 28mm wideangle lenses with slower lense speed

| I- Zuiko AUTO-W 28mm f/2.0 | Zuiko AUTO-W MC 28mm f/2.8 | G-ZUIKO Auto-W 28mm f/3.5 |

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

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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Maintainers for OM Zuiko Site & Message Board: Rick Oleson (Email: Website:, Bruce Hamm (, John Orrell (, Simon Evans, (; Shaun (, Andy Radcliffe (

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 <>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.