Olympus OM 35mm film system close-up and macro equipment
Objective Lens Mount PM-MTob
Introduction
The Zuiko Macro 20 mm f/3.5 lens and the Zuiko Macro 38 mm f/3.5 lens do not have the normal OM lens bayonet mount. Instead, they have a small screw-thread mount (RMS – Royal Microscopical Society – thread, 0.8″ diameter, 36 t.p.i.), the same as microscope objectives. They require the PM-MTob adapter to enable them to be fitted to the Auto Bellows.
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| Olympus OM Objective Lens Mount PM-MTob | |
| (front) | (rear) |
The PM-MTob can also be used to adapt any standard microscope objective to the Olympus OM bayonet fitting.
This adapter is not intended to be attached direct to a camera body.
| Microscope ref. | PM-MTob |
|---|---|
| US stock no. | 104-220 |
| Introduced | 1972 |
| Discontinued | |
| 1978 US price | $31.00 |
| 1988 US price | $57.00 |
Versions
Only one version is known.
Alternatives
Adapters that allows lenses with an RMS screw fitting such as the Zuiko Macro 20 mm f/3.5 lens and the Zuiko Macro 38 mm f/3.5 lens to be fitted to most SLR and mirrorless cameras or to a T-mount adapter are available on eBay.
Instruction leaflet
Instructions were not provided with the PM-MTob.
Send comments or questions to Alan Wood
Created 18th May 2001 — Updated 4th January 2010
Copyright © 2001–2010 Alan Wood