Olympus's first Four Thirds pro DSLR — the E-1, 5MP CCD, weather-sealed, 2003.
The Olympus E-1 was the first camera built to the Four Thirds System standard, launched in 2003 as Olympus's professional digital SLR and the flagship that opened the E-System line. It was developed jointly with Kodak and aimed at working photographers who wanted a purpose-designed digital body rather than a film SLR adapted to a sensor.
The E-1 is a Four Thirds digital SLR using a 5-megapixel Kodak CCD sensor in the four-thirds format, taking Four Thirds mount lenses. It has an optical pentaprism viewfinder, a focal-plane shutter, and was among the first weather-sealed digital bodies at its price point. It uses a Supersonic Wave Filter dust-reduction system that shakes dust off the sensor at power-up, and it has no video function, being a stills-only professional body of the early digital era.
The magnesium-alloy body and comprehensive sealing suit outdoor and documentary work in poor conditions, and the handling is geared to photographers used to pro-grade controls. The 5MP resolution is modest by later standards, which limits large-print work, but the sensor and Olympus lenses produce clean files, and the compact Four Thirds lenses keep the whole kit lighter than competing pro systems.
When buying, check the shutter actuation count against its rated life, inspect the sensor for dust and marks despite the cleaning system, and test the screen and rear controls. Verify the card-door and battery-door latches, and confirm the battery is still available, as the BLM-1 pack and charger are now aftermarket-only. As an early Four Thirds CCD body, watch for colour cast in mixed light and note that Olympus service for E-System bodies has ended, so any fault is repaired independently or not at all.