Camera Craftsman - Fujica ST801

Camera Craftsman's technical examination of the Fujica ST801 delivers an in-depth look at this landmark SLR and its two defining innovations in electronic photography: silicon-blue photocells and an integrated LED display system mounted on the focusing screen itself. The analysis explains why these light-sensitive silicon cells outperformed older CdS and selenium alternatives, and how the photovoltaic metering circuit with FET transistor amplifiers provides more reliable exposure control—a design choice that influenced camera engineers across the industry.

The technical content walks through viewfinder optics, shutter speed control mechanisms, and the adjustment procedures a service technician needs to properly set up or troubleshoot the camera. Lens coupling and the shutter release system's interaction with the mirror and film transport are explained thoroughly. The bottom plate assembly and its role in powering the electronic circuits receives careful attention. Detailed cross-sectional diagrams and electrical schematics clarify the internal architecture, making this manual essential for anyone doing hands-on repair or rebuilding work on the ST801. Camera repair professionals and dedicated enthusiasts will find this a valuable workshop reference for understanding how the ST801's innovations shaped the evolution of electronic SLR design.