Ricoh KR-10
The Ricoh KR-10 features aperture-priority auto exposure.
All you do is set the desired aperture and the camera automatically chooses the correct shutter speed (indicated in the viewfinder).
Other features of this camera include:  self-timer, exposure compensation,
1/000 sec max shutter speed, flash sync up to 1/125 sec, manual exposure control, and a heavy duty
metal chassis.