Film Cameras

35mm Lens-Shutter Half-frame Camera




  • Japan
  • Americas
  • Europe, Asia, Oceania
  • Outline
  • Specifications
Marketed February 1963
Original Price 10,800 yen, 1,000 yen (case), 300 yen (wrist strap)

The Olympus-Pen in September 1959 was the first camera in Japan to offer the half-frame format which doubled the number of exposures on a roll of 35mm film. Canon had also started development of a compact and luxury-looking half-frame camera.

The resulting Canon Demi offered high-performance features in a pocket-size package. They included a direct viewfinder, a 28mm f/2.8 lens (5 elements in 3 groups), and a match-needle selenium exposure meter which used a behind-the-lens light value program for accurate metering. When the Demi was introduced, there were already twelve competing models in the market. The Demi, however, proved to be popular. “Demi” comes from the French word meaning “half.”

*The Demi 2 had front and back covers made of lightweight aluminum instead of brass.

Type 35mm Lens Shutter, zone-focusing, half-frame camera
Picture Size 24 x 18 mm
Lens Canon SH28mm f/2.8 (5 elements in 3 groups)
Shutter Seiko-sha L with behind-the-lens light value program. EV 8 (f/2.8, 1/30 sec) to EV 17 (f/22, 1/250 sec.) and B. X-sync flash.
Viewfinder Kepler finder with 0.41x magnification and 90% coverage.
Focusing Lens focusing ring to match zone focusing marks. Pictographs for near (1 m), medium (3 m), and far distances (15 m). Focusing range from 0.8 m to 15 m (infinity).
Built-in selenium photocell meter with moving needle and program to determine correct exposure with the shutter speed and aperture combination. Metering range of EV 8 – 17 (at ISO 100). Film speed range of ISO 10 – 400.
Film Loading &
After opening camera back, insertion onto spool. Advances with camera-top lever. (145 single or partial strokes with extra 20 stroke)
Frame Counter Counts up. Resets automatically when camera back is opened.
Film Rewind Camera-top crank
Dimensions &
115 x 68 x 37mm 380g