This is a later derivative of the Petri Computor 35, featuring a fast f1.7 40mm lens and coupled rangefinder. The camera appears to calculate shutter and aperture automatically, despite a confusing F-stop indicator on the lens barrel, which seems to be just for the benefit of flash photography, so does not actually control the aperture. The bright finder is not so very bright on this one, although it may have yellowed with age.

The Computor II on site shows a switch on the rear selecting F or A (assumed to be flash/Automatic) - which must disable the auto-exposure and enable the aperture control on the lens for flash.

The CdS cell is placed just above the lens, inside the filter thread, allowing the meter to compensate for filters.

The Pbase site gives dates as 1972-74.

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