Κυριακή, 11 Απριλίου 2010

PRAKTICA BX 20

Technical features:
  • SRL camera for a frame size of 24mm x 36mm, open-aperture TTL metering system with electronic aperture setting transfer
  • Automatic electronic shutter speed control (stepless) in the range from 1/1000 s to 40 s
  • Change-over from automatic to semi-automatic mode possible; fixed speed range from 1/1000 s to 1 s
  • Electronic TTL metering system for flashes and correct dosage of light for dedicated computerized flash unit, X synchronization (approx. 1/100s)
  • Flash readiness indication (and "flash O.K." signal) in viewfinder image
  • LED information on expected shutter speed in viewfinder
  • Indication of overexposure or underexposure
  • Aperture setting displayed at bottom of viewfinder image
  • Shutter cocked information
  • Manual exposure compensation of ± 2 exposure factors, indication of compensation by red LED
  • Mocking of metered value and indication there by green LED at AEL ~ (automatic exposure lock)
  • Self-timer (approx. 10 s) with starting button serves also as stop-down lever for depth-of-field checking
  • Focusing system comprises Fresnel lens with innovative diagonal triple wedge, microprism ring and ground glass ring
  • Viewfinder image shows approx. 95 per cent of picture sides
  • PRAKTICA bayonet (flange focal length 44.4mm internal diameter 48.5 mm)
  • Connection for motor winder
  • Film information holder on camera back
  • Indication of battery condition in viewfinder
  • Power source: 6V primary battery (e. g. PX281Mallory)
  • Silicon photo element as light sensor
  • Metering and control range: 0-17 EV at 100ASA and aperture 1.4
  • Dimensions of body: 141mm x 88mm x 49mm
  • Weight of body without battery: 510 g

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