Compact35mm half-frame
beginner
Discontinued
Canon Demi
1963-1967
Economical shooting
Format
35mm half-frame
Shutter
1/250
Max speed
Metering
TTL
Mechanical
Weight
400g
Best For
- Economical shooting
- Experimental photography
- Compact camera fans
- Canon half-frame collectors
Features
- Half-frame format (72 exposures per 36exp roll)
- Selenium meter (no batteries)
- 28mm f/2.8 Canon lens
- Zone focusing
- Auto exposure
Limitations
- Half-frame = smaller negatives, more grain
- Selenium meter can weaken
- Zone focus only
- Limited shutter speeds
Common Issues to Check
- Selenium meter degradation
- Aperture blade sticking
- Shutter problems
- Light seal deterioration
Buying Guide
Canon's half-frame series competed with the Olympus Pen. Various models existed with different lenses and features. The Demi uses selenium metering (no batteries). Half-frame doubles your shots per roll but produces smaller negatives with more visible grain in prints. Test meter function before purchase.
Pricing
Typical Range£40 - £90
Excellent Condition~£120
Various models. Test selenium meter.
Prices as of 2026-01. UK market, may vary.
Last verified: Jan 2026Report an error