Additional information on Olympus Zuiko Lenses
Zuiko Standard 50/55mm lenses / Part III

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<< -- Credit: Image of this lovely ZUIKO standard lenses was scanned from a 1986 Olympus Sales Manual.
F-Zuiko AUTO-S 50mm f/1.8 & Zuiko AUTO-S 50mm f/1.8

Measuring just 32mm and weighs merely 165g (5.8 oz), this standard lens is extremely compact and it is the most lightweight version among all ZUIKO standard lenses. Naturally, it is also the most affordable in this series and has sold in big numbers over the years as a bundled lense for any new purchase of a OM SLR.

With a simple, straight forward optical formulation of 6 elements in 5 groups, Its optical design provides superb definition for maximum edge-to-edge sharp images throughout the focusing range. Its closest focusing distance is maintained at 0.45m throughout the years since its introduction. Other than it can be used as a high performance day to day lense for general photography, many OM photographers also take advantage of its high resolving power as a good, cheap alternative bellow lense for close-up photography.

This Zuiko lense has a long history where can trace back to almost 30 years ago and has only gone through an update probably occurred in 1982 with an entirely different optical configuration. Strangely, Olympus has not been very keen on highlighting any technological advancement applied to the update neither it has addressed some sensitive issue pertaining to the lense coating used in these lenses. For an instance, up to a very late stage, many of the 50mm f/1.8 still have not been identified whether it carries any MC (multi-layers lens coating) despite the fact most of us know, it is. On the other hand, all Zuiko AUTO-S 50mm f/1.4 produced after 1984 have added a "MC" identification in the lens data.
<<<--- Picture at top left corner, from my Copyright-free images collection . leofoo ®2002. Picture above in grayscale shows a Zuiko 50mm f/1.8 lense with "MC" indication on the lens data. Imaage courtesy of Mr. DAVID DOBSON <>. Image copyright © 2002 All rights reserved.

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The fast f/1.8 maximum aperture is ideal for most low light level photographic applications. Other than the Pentax which has theirs at a slower lense speed of f/1.7, this ZUIKO standard lense is ranked among the smallest-size f/1.8 standard lense you can find in 35mm SLR photography. The f/1.8 aperture provides a relatively bright viewfinder image for pin-point focusing and assuring picture composing.

<<< -- Credit: Image courtesy of Mr Rick Oleson® <> who also co-maintains the popular OM Message Board in PIM site. Image Copyright © 2003. All rights reserved.

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Current version of the 50mm f/1.8 lense carries a lighter weight than previous version. The reduction of weight and size was achieved via redesigned of the lense with a new optical construction of 6 elements in 4 groups over the older version's 6 elements in 5 groups. However, despite with the update which aims to improve performance, handling and provide a good portability for the mobile photographers, the lense still retains a high built quality throughout which is apparent once you get hold of one in your hand. Technically, you can use a reverse adapter to convert this lense as a macro lense, but If you are often need to engage in close focus photography, always invest into a dedicated macro lense that provide you a good level of versatility that is hard to match by such combination. A good standard lense for such consideration is the Zuiko 50mm f/3.5 MACRO and Zuiko 50mm f/2.0 MACRO which will be featured at other sections.

<<<--- Older version of the Zuiko 50mm f/1.8 lense has a silver-chrome front filter rim, as shown on this segmented scan from an old Olympus catalogue.


Current version
Zuiko 50mm f/1.8
Older version: F-Zuiko AUTO-S 50mm f/1.8
Focal length: 50mm

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<<< --- Credit: Three beautifully taken product shots of the ZUIKO 50mm f/1.8 lense courtesy of Mr. Eric Garant <>. All images copyright © 2002 All rights reserved. Please respect the visual property of the contributing photographer.

Maximum Aperture: f/1.8
Angle of View: 47
Optical Construction: 6 elements in 5 groups;
older version: 5 groups, 6 elements
Diaphragm operation: Automatic
Aperture range: f/1.8 ~ f/16
Minimum focus: 0.45m (17.7")
Minimum photographic range: 16cm x 24cm (6.3" x 9.4")
Focusing: Straight Helicoid
Weight: 165g (5.8oz);
older version:170g (8.1oz.)
Length: 32mm;
older version: 31mm (1.2")
Lens hood: Optional 51mm Slide-on type
Maximum Diameter: 59mm (2.3");
older version: 61mm

Filter attachment size/Filters: 49mm screw-in

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 but at smaller aperture with the use of high shutter speed, microprism, corners of the screen and split image may darken. # Compatible, they provide accurate focusing but exposure error may occur in manual mode for OM-1 and OM-2 series models. On AUTO, exposure accuracy remains, but the meter needle may not indicate correct shutter speeds. ## More info on "Picture Angle" or make use of the Glossary section in PIM site..

Additional information on ZUIKO 50mm f/2.0 PF (Power Focus) for OM-101 for the US market or OM-88 PF for other markets.

Except for the special application ZUIKO AUTO MACRO 50mm f/3.5 and ZUIKO MACRO 50mm f/2.0 lenses which have the focal length fall on standard lenses category, there is another special function Zuiko 50mm f/2.0 PF lense. It has not been addressed in this site because of two reasons. Firstly, I have little knowledge relating to its functions. Second, this lense is a dedicated ZUIKO lense designed specifically for the OM-101/OM88PF camera.

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<<< --- Credit: Images courtesy of Alan House <>, who also runs a popular Ebay Store where you can take a visit to scout for OM used items. Image copyright © 2002 All rights reserved.

As the name implies. This ZUIKO lense provides a unique built-in feature in enabling semi-AF power focus when used in conjunction with the OM-101/OM88 PF where the camera-driven mechanism will react to focusing changes. According to what I know, this lense, however is NOT usable on other OM bodies.


Current version
Zuiko 50mm f/2.0 PF
Feature: Power Focus with OM-101/OM-99 PF body
Focal length: 50mm
Maximum Aperture: f/2.0
Angle of View: 47

Optical Construction: 6 elements in 4 groups
Diaphragm operation: Automatic
Aperture range: f/2.0 ~ f/22
Minimum focus: 0.45m (17.7")
Minimum photographic range: 16cm x 24cm (6.3" x 9.4")
Focusing: Camera driven

<<< -- Credit: Image of this lovely ZUIKO standard lenses was scanned from a official Olympus camera Sales Manual

Filter attachment size/Filters: 49mm screw-in
Weight: 150g
Length: 37mm
Lens hood: Optional 51mm Slide-on type
Maximum Diameter: 64mm
Other accessories: no info

| Previous | 3/3 NEXT section covers the ZUIKO MACRO 50mm f/3.5

| Index page for 50mm lenses |
| G-Zuiko AUTO-S 55mm f/1.2 | Zuiko AUTO-S 50mm f/1.2 | G-Zuiko AUTO-S 50mm f/1.4 & Zuiko 50mm f/1.4 | G-Zuiko AUTO-S 50mm f/1.8 & Zuiko 50mm f/1.8 | Zuiko 50mm f/2.0 PF | Zuiko AUTO MACRO 50mm f/3.5 | Zuiko AUTO MACRO 50mm f/2.0 |

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 |

| Back | Index Page of OM Zuiko lenses
| Back | to Main Index Page of OM1(n) & OM2(n) Series SLRs

| Message Board | for your favourite Olympus OM-1(n) and OM-2(n) series models
| Message Board | for your Zuiko Optics in a shared environment
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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: 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.