Konica's cult Auto S3 — compact fixed-lens 35mm rangefinder, 38mm f/1.8, shutter-priority auto, 1973.
The Konica Auto S3, from 1973, was a compact fixed-lens 35mm rangefinder, sold in some markets as the Konica C35 FD. It has become a cult camera among rangefinder users, valued for its sharp lens and small size, and is one of the more sought-after compacts of its type.
This is a 35mm coupled-rangefinder camera with a fixed 38mm f/1.8 Hexanon lens and an electronically-controlled leaf shutter. Exposure is shutter-priority automatic using a built-in CdS meter, with the aperture set automatically; it also supports flash exposure. The shutter is electronically timed, so a battery is required to fire it correctly, and the original used a mercury cell.
The Auto S3 suits street and travel photography where a small, sharp rangefinder is wanted, and its fast 38mm lens works well in lower light. The compact metal body is easy to carry, though exposure is largely automatic with limited manual control beyond flash use.
When buying, note the electronic shutter needs a working battery, and the original mercury cell is obsolete, so a substitute is required. Check the lens for haze and fungus, test the meter and automatic exposure, and verify rangefinder patch contrast and alignment. Replace perished light seals and confirm the shutter fires reliably before relying on it.