Olympus included 2 single-element close-up lenses in the range of accessories for the OM cameras, one for lenses with a 49 mm filter thread and the other for lenses with a 55 mm filter thread. Both lenses were the same strength, +2.5 diopters.
|Olympus OM 49mm Close-Up Lens f=40cm||Olympus OM 55mm Close-Up Lens f=40cm|
Only one version of each lens is known.
|49mm f=40cm||55mm f=40cm|
|Focal length||400 mm||400 mm|
|Dioptre||+ 2.5||+ 2.5|
|Diameter||50.9 mm||57 mm|
|Rear filter thread||49 × 0.75 mm||55 × 0.75 mm|
|Front filter thread||49 × 0.75 mm||55 × 0.75 mm|
|Case||Hard clear plastic||Hard clear plastic|
|US catalog no.||104-001||104-002|
The close-up lenses were supplied in a circular, clear plastic container. The Handy Copy Stand provides a convenient way of keeping the camera at the correct distance from the subject when using the close-up lenses.
Reproduced with permission from the copyright owner, Olympus Optical Co., Ltd
CLOSE-UP LENSES 49mm f=40cm, 55mm f=40cm
These two close-up lenses provide the most economical method of taking close-ups with the OM-1 standard lenses. The 55mm close-up lens is used with the standard 55mm F1.2 and the 49mm close-up lens with both the standard 50mm F1.4 and 50mm F1.8. With these close-up lenses, the minimum focusing distance of the standard lenses can be continuously varied from 45cm (17¾″) to 19cm (7¼″). At the minimum distance, a 12 × 8cm (4¾″ × 3 1/8″) area can be photographed full in the frame.
The 49mm close-up lens can also be used with the ZUIKO Macro 50mm.
How to Use Close-up Lenses
OLYMPUS OPTICAL CO. LTD.
43-2 Hatagaya 2-chome, Shibuya-ku, Tokyo, Japan
After Olympus shifted their emphasis away from the OM series, they introduced better-quality, achromatic close-up lenses for their fixed-lens iS-series SLRs. These close-up lenses were available in both 49mm and 55mm sizes. They were supplied with a plastic diffuser that clips onto a groove around the lens to soften the camera’s built-in flash and stop the front of the lens from partly blocking the flash.
|iS/L Lens A-Macro H.Q. Converter f=40cm||iS/L Lens B-Macro H.Q. Converter f=40cm||iS/L Lens A-Life Size Macro H.Q. Converter f=13cm|
|Focal length||400 mm||400 mm||130 mm|
|Dioptre||+ 2.5||+ 2.5||+ 8|
|Length||12 mm||11 mm||19 mm|
|Diameter||56 mm||64 mm||60 mm|
|Rear filter thread||49 × 0.75 mm||55 × 0.75 mm||49 × 0.75 mm|
|Front filter thread||None||None||None|
|Weight||67 g||105 g||120 g|
|Case||Soft plastic pouch||Soft plastic pouch for lens and flash diffuser|
These iS series close-up lenses can be used on OM lenses with 49 mm and 55 mm filter threads, and produce significantly better results than the close-up lenses designated for the OM series.