The Canon Dial 35 is one of the more unique designs you will see on a half-frame camera. Built by Canon in the mid 1960s, the Dial 35's most interesting innovation is its spring-driven film advance, which is wound up by cranking the handle at the bottom of the camera. Canon's website claims that this was the first camera to feature an automatic advance, taking a new roll of film to its first frame automatically - how about that?
The most distinctive feature of the Dial 35 is the ring of windows around the lens, giving the camera its "Dial" name. The dial is manually rotated to set the shutter speed, which moves a different window in front of the meter's eye, the camera then automatically selects the correct aperture. The Dial 35 (it was sold under both the Canon and Bell & Howell brands) has a wind-up clockwork film advance - crank the handle on the bottom and fire away!
Earlier Dial 35s took an esoteric battery, but the 35-2 (introduced in 1968) can be fitted with the modern Varta 625 1.5V battery. The camera originally took a 1.3V battery but you can have a repair shop adjust the meter for you, or do it manually by overriding the ASA setting to compensate. The later 35-2 model added a hot shoe and expanded ISO range up to 1,000.
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Canon Dial 35-2 (Bell & Howell Dial 35)
The Bell & Howell Dial 35 (a renamed import version of the Canon Dial 35-2) has full manual control: shutter speeds are set on the large silver ring surrounding the lens, and the aperture is controlled via rotating the small knurled dial underneath the viewfinder. The shutter release is mounted to the front of the camera.