OLYMPUS OM-40

The Olympus OM-40 Program is a 35mm film SLR camera introduced in the early 1980s, designed for amateur photographers seeking automated exposure control. The camera features Olympus's ESP (Electro-Selective Pattern) metering system alongside traditional TTL center-weighted metering, offering enhanced exposure accuracy in challenging lighting conditions. It provides three exposure modes: Program (fully automatic), Aperture Priority Auto, and Manual, with shutter speeds ranging from 2 seconds to 1/1000 second plus Bulb mode. The OM-40 supports both DX-coded automatic film speed setting (ISO 25-3200) and manual film speed adjustment, and includes exposure compensation of ±2 EV in 1/3 stop increments. The camera features a pentaprism viewfinder with 93% coverage, electronic self-timer, and compatibility with Olympus OM mount lenses and T-series flash units for OTF (off-the-film) automatic flash control. The body weighs 460g and is powered by two SR44 or LR44 batteries.