This is one of the second generation of bellows macro lenses for the Olympus OM system and was first produced in 1980. Like the other second-generation lenses, this one has an automatic diaphragm and a focusing helicoid to assist fine focusing.
This lens is intended for use with the Auto Bellows or the Telescopic Auto Tube 65–116; its built-in focusing helicoid can only be used for fine-focusing, and the rear of the lens extends beyond the bayonet lens mount, so it is not possible to mount the lens directly on a camera. The inclusion of a focusing helicoid means that this lens can also be used on extension tubes; the shortest combination that allows an image to be brought into focus is 7 mm + 25 mm.
When used with the Auto Bellows, the Double Cable Release is needed to activate the automatic diaphragm.
This lens replaced the Zuiko 1:1 Macro Lens 80mm f/4, which has a manual (pre-set) diaphragm and does not have a helicoid for fine focusing. The Auto version is a new lens design, not just the earlier lens in a new mount.
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| Lowest magnification | ×0.2 | Subject area | ?×? mm | Working distance | 932 mm |
|---|---|---|---|---|---|
| Highest magnification | ×2.2 | Subject area | ?×? mm | Working distance | 82 mm |
| Lowest magnification | ×0.45 | Subject area | ?×? mm | Working distance | 222 mm |
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| Highest magnification | ×1.2 | Subject area | 30×20 mm | Working distance | 114 mm |
| Lowest magnification | ×1 | Subject area | 36×24 mm | Working distance | 92 mm |
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| Highest magnification | ×2 | Subject area | 18×12 mm | Working distance | 66 mm |
A hard leather case was supplied with the lens. A Mirror Housing was made to fit this lens. A dedicated close-up lens made specifically for this lens increases the maximum magnification with the Telescopic Auto Tube 65–116 to 2×.
A Calculator Panel for the T Power Control 1 was available for use with this lens and the T10 Ring Flash 1, with the distance scale in both feet and metres. Self-adhesive labels were provided with the T Power Control 1 to stick onto a Calculator Panel to provide readings for manual flash with the T10 Ring Flash 1, T8 Ring Flash 2 and T28 Macro Single Flash 1.
The Macro Flash Shoe Ring screws into the 49 mm filter mount, and takes the heads of the T28 Macro Twin Flash 1 or the T28 Macro Single Flash 1.
See also: Close-up and Macro Photography – Bellows Macro Lenses
Reproduced with permission from the copyright owner, Olympus Optical Co., Ltd
Printed 0781
ZUIKO MC AUTO-1:1 MACRO F4 f=80mm

Specially designed for macrophotography, copying and close-up work to deliver optimum resolution at 1:1 reproduction when used with the Telescopic Auto Tube 65–116 or Auto Bellows. Especially when used with the telescopic 65–116, it makes an extremely convenient macro lens (½× – 2×), as automatic diaphragm control and meter coupling is possible. With the Auto Bellows automatic aperturing is achieved by the use of the Double Cable Release.
Generally, ordinary lenses and conventional macro lenses cannot reproduce life-size images with critical definition, while this is the world’s first 1:1 macro for use with 35mm film.
In close-up and macro photography blurred images caused by camera shake become increasingly exaggerated as magnification ratio becomes greater. However, thanks to the Electronic Flash T32 or T10 Ring Flash, taking of razorsharp macro photos has become within each reach of every photographer. For advanced amateurs and professionals, a macrophoto stand and highly sophisticated PMT-35 macrophoto equipment are available in the OM System. A Closeup Lens 80mm is also available for 2:1 macrophotography to be used with this lens and the 65–116.
The lens is multi-coated and accepts a 49mm threaded filter. Compatible focusing screens are 1-4, 1-10 and 1-11.
Specifications
Focal length: 80mm
Angle of view: 9° (at high magnification)
Optical construction: 6 elements in 4 groups, multi-coated
Diaphragm operation: Automatic
F stop range: 4 – 32
Minimum focus: 0.23m (9.1″)
Minimum photographic range: 48mm × 72mm – 12mm × 18mm (1.9″ × 2.8″ – 0.5″ × 0.7″)
Focusing: With Telescopic Auto Tube 65–116 or Auto Bellows
Fine focusing: Straight helicoid
Weight: 170gr. (6.0 oz.)
Length: 33mm (1.3″)
Maximum diam.: 60mm (2.4″)
Filter size: 49mm threaded
OLYMPUS
OLYMPUS OPTICAL CO., LTD.
SAN-EI BUILDING, 22-2, Nishi Shinjuku 1-chome, Shinjuku-ku, Tokyo, Japan
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Created 18th May 2001 — Updated 16th December 2008
Copyright © 2001–2008 Alan Wood