Dating zuiko lenses
Olympus produced a wide variety of OM camera models over the years. Cameras with single-digit model numbers were the 'professional' series, optimized for more advanced features and durability.
Two-digit (or more) model numbers, or letters, meant a 'consumer' camera designed for ease of use.
Olympus, by throwing its weight behind the pro-oriented E-M1X and all this new glass, is likewise positioning Micro Four Thirds as a professional system – not just a cheaper, smaller format.
With Panasonic seem to be sidelining Micro Four Thirds in favor of the soon-to-be-launched full-frame Panasonic S1 and S1R, the future of the MFT format may firmly be in Olympus' hands.
Was a high-end compact digital camera (when it was launched). The series evolved through the 30 models, which had higher CCD resolutions, and the 50 models, which were equipped with wide-angle zoom lenses.
The first model was the all-mechanical M-1 which, after pressure from Leica (which already had an M1 model), was renamed OM-1.
By the end of the 1970s it was joined by the semi-automatic OM-2 and consumer-oriented OM-10.
Olympus continued the naming pattern with the 'professional' OM-3 and OM-4, and the consumer-level OM-20, OM-30 and OM-40.
Professional and advanced-amateur demand for the high-end models continued, and they were produced until 2002, along with the consumer-grade OM-2000.
The Olympus OM-1 was a manually-operated 35 mm single-lens reflex camera forming the basis of the OM system in 1972.