Σάββατο, 19 Σεπτεμβρίου 2009

PRAKTICA BC1 ELECTRONIC

Praktica BC1, first version Producer data Producer VEB Pentacon Dresden Betrieb des Kombinates VEB Carl Zeiss Jena responsible constructor Werner Hahn, Rolf Noack production period April 1984 to 1985 no of produced cameras 91,500 Technical properties of the camera shutter type steplessly working electronically controlled vertical-run metal-blade focal plane shutter exposure time(possible settings) B, steplessly automatic speeds between 40 sec and 1/1000; manually precise speeds of 1/1, 1/2, 1/4, 1/8, 1/15, 1/30, 1/60, 1/125, 1/250,1/500, 1/1000; mechanical range 1/90 sec view finder fixed eye-level view finder (Pentaprism, field of view: 95%) with field lens with triple rangefinder wedge, truncated microprism screen, groundglass field, red LEDs- for shutter speed signaling changes their brightness with brightness of the image mirror instant-return mirror film transport / frame counter single stroke 125° wind-on quick-release lever with 25° stand off position, accepts B-motor winder, folding crank rewind knob, auto-zeroing frame counter lens mount Praktica-B-mount with EDC (electronic diaphragm control) self timer mechanically, approx. 10 sec delay battery VARTA V28 PX (4xLR44) metering system TTL-metering (12 to 3200 ASA) using electronic diaphragm control (EDC) for measurement with open aperture using a Gallium-Arsenide-Phosphide photo-diode, auto exposure compensation with +/- two shutter speeds in half steps, automatic exposure system with memory key, battery check facilities flash system X-synchronization (1/90), accessory shoe at the top of the pentaprism with additional contact for the flash ready signal, additionally coaxial flash socket at the camera body for dual flash systems flash indication yes, green LED aperture reflection into view finder yes general comments first version with first version of exposure-compensation and ASA-setting knob cylindrical rewind knob with metal crank arm

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