Pentax 6x7 / 67 Stuck Mirror Troubleshooting Tutorial

Comprehensive technical study dedicated to the PENTAX 6x7 reflex camera, one of the most capable medium-format photographic instruments of its generation. This authoritative reference work, authored by Michel de Ferrieres under the direction of Gérard Bouhot, provides detailed analysis of the design and operational principles of this prestigious camera body. The publication traces the historical development of the PENTAX 6x7 from inception through commercial iterations introduced from 1983 onward. It thoroughly examines essential technical specifications: actual 6x7 cm format, dimensions and weight, integrated TTL prismatic metering system, film transport mechanism, and rapid advance lever operation. Significant coverage is dedicated to the electronic systems, including the TTL GaAsP prism metering electronics, electromagnetic shutter with CdS cells, integrated calculation circuits, and flash synchronization capabilities. The guide systematically addresses photosensitive elements, camera body-to-meter coupling, battery power supply, preselected aperture operation, and protective measures against extraneous light interference. Comprehensively illustrated with detailed photographs and functional diagrams, this technical manual serves as an essential resource for service technicians, restoration specialists, and photography enthusiasts seeking in-depth understanding of this semi-automatic, professional-grade reflex system and its sophisticated electromagnetic components.