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The Ricoh Auto Half SL is a 35mm half-frame camera introduced in 1970 by Ricoh. The camera is based on the Ricoh Auto Half "zone focus", but it has a much better 1:1.7 lens, it has a Cds meter and a variable shutter. All Auto Half cameras have automatic exposure and film wind via a spring motor. This camera is the most interesting of all Auto Half camera models. The camera's main features are:

35mm film half-frame camera, picture size 24 x 18 mm
Rikenon 35mm f/1.7 (4-group 7 element) lens, 3 focus zones, 0.9m-∞, hyperfocal setting

Automatic shutter 1/30 - 1/250, 1/30 for flash with manual aperture selection
Size 75 x 90 x 54 mm, Weight : 395 g
ISO 25-400, no accessory shoe


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Front. Self timer, lens and viewer, Cds meter window.

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Back view. Finder, it shows a yellow dot, if exposure is fine.


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Seen from above. "Control center", inner disc: ISO setting, dented ring, selection: off, aperture for flash (1/30), A (automatic shutter speed and aperture). Shutter button.

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Seen from below. Film rewind, exposure counter, spring wind, rewind unlock (and spring release) in the center of the spring wind.

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Right side. Flash socket and tripod screw.

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Left side. Camera back opening knob and grip.

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Camera back open open.


The Ricoh Auto Half SL is a well designed compact camera, its handling is very easy. With variable shutter speeds it's for outdoor and indoor use, a flash is necessary for dark interiors. Pictures are sharp and well exposed. It's sturdy and very heavy. Today's full format cameras are not bigger and they weigh a third. There is no indication of shutter speed or aperture selected by the camera. No indication of focus either, you have to remember to set it properly. So even this is a nice vintage camera of limited use, but it's fun. In my opinion the focal length of 35mm is a bit long. It's good for photographing people in the street at daylight. Set to hyperfocus you are fine for about quick 75 shots on a 36 roll.

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