Review of Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm

For the provided Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm lens many thanks the store ManualLensUA (look at telegram), where you can find many used ones. lenses for different systems, including similar Olympus lenses.

In short

Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm is a short telephoto camera from the film era of the early 80s. Compact and lightweight, with good image quality. It is considered a good solution for portrait photography. The lens body is only a few millimeters longer than fifty dollars Olympus OM-System G.Zuiko Auto-S 1:1.4 f=50mm.

There are several main modifications:

• Olympus M-System E.Zuiko Auto-T 1:2.8 f=100mm
• Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm, shown in this review
• Olympus OM-System Zuiko MC Auto-T 100mm 1:2.8
• Olympus OM-System Zuiko Auto-T 100mm 1:2.8

In those years, such lenses were common, for example, you can remember SMC PENTAX-M 1: 2.8 100mm ASAHI OPT. CO., JAPAN or Nikon Lens Series E 100mm 1: 2.8.

Appearance

The review lens was in good condition.

Main technical characteristics of Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm:

Name of instances from review	Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm 142074
Basic properties	Lens designed for full frame film cameras Manual focus only CAR - automatic iris control OM-SYSTEM – Olympus OM mount E – five elements in the optical design (the English letter 'E' is the seventh in a row) T - Telephoto, telephoto lens Zuiko (Zuiko) – Light of the Gods Metal case
Front Filter Diameter	49 mm, metal thread for filters
Body materials	All parts of the lens barrel are made of metal, the focusing ring is rubberized
Focal length	100 mm
Diagonal viewing angles	24° for full frame cameras
Zoom ratio	1 x
Designed by	for film cameras with Olympus OM mount
Number of aperture blades	6 straight (not rounded) petals
Tags	markings on the focusing ring with focusing distance in meters and feet, there are marks for 1, 1.5, 2, 3, 5, 10 meters and an infinity mark (white m marks) + 4, 6, 8, 12, 20, 50 feet (orange marks ft) Ring with aperture values, there are marks for F/2.8, 4, 5.6, 8, 11, 16, 22, other intermediate values ​​cannot be set DOF scale for F/5.6, 11, 22 Infrared Label green text '100mm' LENS MADE IN JAPAN on the silver part of the mount
Diaphragm	from F/2.8 to F/22. The lens has an aperture control ring. Aperture blades form notches at F/4
MDF (minimum focusing distance)	1 метр
The weight	234 grams (measured, only the lens itself)
Optical design	5 elements in 5 groups. The lens does not use special optical elements. The image is clickable.
Lens hood	Must screw into the front filter thread
Period	Produced since 1972. Later updated to the Olympus OM-System Zuiko MC Auto-T 100mm 1:2.8 version
Manufacturer country	LENS MADE IN JAPAN (Lens made in Japan)
Price	New do not sell. In a variant B. at. 50-150 cu

This lens can be easily installed on any modern digital mirrorless camera. For installation, you should use the appropriate adapter/adapter, which allows you to use lenses with an Olympus OM mount on the desired mirrorless system without any problems or restrictions. Below is a list of systems/mounts with links to the necessary adapters/adapters: Sony E/FE/NEX, Canon RF/RF-S, Canon EF-M, Nikon Z, Nikon 1, Leica l, FujiFilm GFX, fujifilm x, Samsung NX, Micro 4 / 3.

Assembly, control, focus

Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm – compact and lightweight.

Lens body made very high quality. The filter diameter is only 49 mm. The focus ring is rubberized, the aperture ring is not. Among the shortcomings is the microplay of the aperture control ring. The aperture control ring is located at the front of the lens, convenient to use, and has no intermediate values.

The Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm focusing ring rotates approximately 180 degrees. During focusing, the front lens (together with the thread for filters) moves forward, but does not rotate.

On the body there is a scale for focusing distance in meters and feet and a DOF scale.

Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm has a slight 'Focus Breathing' effect (changing the viewing angle while focusing). When focusing towards the MDF, the viewing angle decreases.

Important: focus peaking with Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm on cameras Sony a7M3 и Sony a3500 works good.

Sample photos (Full Frame)

The pictures in the gallery were taken with a camera Canon EOS 5D (Full Frame, 13 MP), which has already become a “digital classic,” and an adapter Olympus OM -> Canon EF. All photos for this review were prepared by Natalia (Instagram). All photos in this review are shown without processing, according to the principles ZEROJPEG.

Jpeg source photos download / watch this link (20+ photos, Google Drive gallery).

Results

Olympus OM-System E.Zuiko Auto-T 1:2.8 f=100mm – compact, lightweight, pleasant.

10 main advantages

1. quality assembly
2. compact sizes
3. light weight
4. Stylish design with chrome trim ring and silver front nose
5. convenient focusing ring
6. low cost in the secondary market
7. availability on the secondary market
8. ease of adaptation to mirrorless systems (and some mirrored ones, like Canon EF)
9. good resolution at closed apertures
10. beautiful bokeh

10 main disadvantages

1. only 6 aperture blades
2. microplay of the aperture control ring
3. aperture blades form notches at F/4
4. there are no intermediate values ​​for the aperture control ring between pairs of numbers
5. problems when working in back and side light, significant loss of contrast, lens bevels are poorly blackened
6. no multi-coating (appeared in a subsequent modification)
7. difficulty adapting to some mirror systems
8. a hood that is screwed into the thread of the front filter must be used
9. strong spherochromatism
10. other minor optical imperfections

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Material prepared Arkady Shapoval. Training/Consultations | Youtube | Facebook | Instagram | Twitter | Telegram