Olympus OM-10 Olympus OM-20 Olympus OM-30 Olympus OM-40 The OM-10 hit the markets in June 1979 at the same time as the OM-2N.
Olympus OM-10 Olympus OM-20 Olympus OM-30 Olympus OM-40 OM-10于1979年6月与OM-2N同时上市。