Single-lens reflex camera

A single-lens reflex camera (SLR) typically uses a mirror and prism system (hence "reflex", from the mirror's reflection) that permits the photographer to view through the lens and see exactly what will be captured, contrary to rangefinder cameras where the image could be significantly different from what will be captured. When the shutter button is pressed the mirror will adjust allowing the light to pass through on to the film, resulting in the image being presented.

History

Medium format SLR by Hasselblad

Medium format SLR by Hasselblad

The 1952 (Pentax) Asahiflex, Japan's first single-lens reflex camera

The 1952 (Pentax) Asahiflex, Japan's first single-lens reflex camera

The Contaflex III a single-lens reflex camera from West Germany from 1957, with additional 115 mm lens

The Contaflex III a single-lens reflex camera from West Germany from 1957, with additional 115 mm lens

The 35 mm film-based Nikon F, 1959, the world's first single-lens reflex system camera