The EOS 750 and EOS 750QD are autofocus SLRs for 35mm film introduced by Canon in 1988. The QD version is able to imprint dates through 2019 onto the film. Both 750's were a very simplified EOS models, primarily meant to use programmed autoexposure, with no manual alternative. Film handling is motorized, and the camera requires a 6-volt lithium 2CR5 battery to operate. (The date back requires its own separate CR2025 "coin" type battery.)
The EOS 850 is nearly identical, but lacks the popup flash (and date back).
A special "depth of field" metering mode is coupled with the (single) autofocus sensor: By half-pressing on the shutter release, the photographer selects two areas of the scene which are both meant to be in focus. The camera then determines the optimum focus distance, and stops down the lens to a sufficiently small aperture to achieve this.