Olympus OM Equipment for Close-up and Macro PhotographyBellows Macro Lenses
The first bellows macro lenses to be introduced for the OM range were single-coated versions of the 20mm f/3.5, 38mm f/3.5 (which both need the PM-MTob adapter) and 80mm f/4 (manual). These were replaced by multi-coated versions, and the auto-diaphragm 135mm f/4.5 was added to the range. The manual-diaphragm versions of the first 3 lenses were then replaced by the auto-diaphragm 20mm f/2, 38mm f/2 (both with OM bayonet mount) and 80mm f/4. See also: Close-up and Macro Photography – Bellows Macro Lenses
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