Fujica M42

The Fujica SLR models were all 35mm cameras with through the lens exposure meters. Each had its individual characteristics, mainly in the type of metering or in the meter readout:

• ST601 - the basic model, with shutter speeds from 1/2 second to 1/700 second and stopped-down metering operated by a button switch on the camera front, 0.92x viewfinder magnification;
• ST605 - as ST601 but with slightly larger 0.96x viewfinder magnification;
• ST605 II - full-aperture metering version of the ST605 with shutter speed indicated in viewfinder;
• ST605N - as ST605 but with shutter speed indicated in viewfinder;
• ST701 - the first camera of the system, with shutter speeds from 1 second to 1/1000 second and stopped-down metering operated by a button switch on the camera front;
• ST705 - an upgraded version with speeds from 1 second to 1/1500 second and full-aperture metering operated by the first pressure on the shutter release;
• ST705W - as ST705 but with contacts for automatic winder and with shutter speed indicated in viewfinder;
• ST801 - a model with extended shutter speed range from 1 second to 1/2000 second, and a meter readout, which uses 7 LEDs instead of a meter needle;
• ST901 - the most sophisticated version, has an electronic shutter controlled by the metering system to give shutter speeds from 20 seconds to 1/1000 second in a continuously variable range. It can be used manually at the orthodox speeds from 1/60 to 1/1000 second. The meter readout is digital, indicating the range within which the meter will set the shutter speed when the shutter release is fully depressed;
• AZ-1 - also an automatic-exposure model with electronically-controlled shutter but shutter speeds run only from 1/2 to 1/1000 second in the normal steps. It can be used manually at speeds of 1/60, 1/250 and 1/1000 second. The meter readout is by a series of LEDs indicating the shutter speed selected by the meter circuit. Sustained first pressure on the shutter release locks the exposure setting. An auto winder was available.

All the cameras took universal 42mm-thread lenses and attachments but the full-aperture metering facility was retained only with Fujinon lenses specifically made for the Fujica cameras. These lenses had a recess to accept the locking pin on the lens flange and a lug to move the full-aperture teller surrounding the flange.