STX-1 (1979) and STX-1N (1983) are fully mechanical 35mm SLR cameras with TTL exposure metering and shutter speeds up to 1/700 sec., based on the ST605N model. The STX-2 (1985) received a faster shutter speed of 1/1000 sec.
The AX-1 (1979) received an electronically controlled shutter with speeds up to 1/1000 sec and aperture-priority auto exposure metering mode. The AX-3 (1979) added a manual exposure mode that was not available with the AX-1, and the AX-5 (1979) added a program auto and shutter priority auto exposure modes.
AX Multi Program (1985) featured a more intelligent program auto with Normal mode, High speed priority mode and Depth-of-field priority mode.
A wide range of X-Fujinon and X-Fujinar lenses were available in the system, from a 16mm fisheye to a 400mm super telephoto lens. DM-labeled lenses supported all auto exposure modes available with the AX-5. The rest of the system's lenses could be used for full aperture metering and aperture-preferred auto exposure mode.