[3] It was the first camera in Canon's new EOS series, which was designed from scratch to support autofocus lenses.

Canon's first EOS camera had the latest technologies, including a microprocessor and a Canon-developed BASIS sensor for high-precision AF.

A range of high-precision ultrasonic motor EF autofocus lenses were also developed successfully for the 650.

An EOS 650 was used in 1992 to take the first photographic image that was uploaded on the World Wide Web, a picture of the band Les Horribles Cernettes.

All 630/600 models have faster autofocus with "focus prediction", 7 custom functions (including options for back-button focus and film leader out), 7 Programmed Image Control (PIC) modes and 5 frames per second film transport, an improvement from the 650's 3 fps.