Κυριακή, 11 Απριλίου 2010

MINOLTA DYNAX 9 xi

Specification

Minolta 9xi body parts photo 1.b
The Minolta Dynax/Maxxum specifications are as follows:[2]
AF system: Minolta's through the lens (TTL) phase-detection system with four CCD sensors; activated by Eye-start; Multi-dimensional predictive focus control; built in AF illuminator automatically activated in low light/low contrast conditions; AF sensitivity range: EV -1 to 19 (at ISO100); AF illuminator range: 0.7 to 9m (Based on Minolta's standard test methods)
Metering: TTL-type; 14-segment honeycomb-pattern silicon photocell (SPC) automatically activated by Eye-start; second SPC for TTL flash metering of dedicated flash unit; range: honeycomb-pattern EV 0-20, center-weighted average EV 0-20, spot EV 3-20 (ISO100, 50mm f1.4 lens)
Shutter Electronically-controlled, vertical-traverse, focal-plane type; automatic speeds: in P and A modes, stepless 1/12000 to 30 sec. with nearest half-stop displayed; manual speeds: in S and M modes, 1/12000 to 30sec in nearest 1/2-stop increments plus BULB in M modes; x-sync shutter speed: 1/300sec.; x-sync shutter speed in wireless/remote flash mode: 1/60.(1/30sec. in ratio)
Viewfinder: Eye-level fixed pentaprism showing 92% of vertical and 94% of horizontal field of view; magnification: 0.75X with 50mm lens at infinity; transparent LCD screen and Acute-Matte screen; diopter: -2.5 to +0.5 adjustable; long eye-relief.
Focusing Screen Changeable at an authorized Minolta Service facility; type L (matte field with grid) or type S (matte field with vertical/horizontal scales)
Film-speed range Automatic range: ISO 25-5000 in 1/3-stop increments; manual range: ISO 6-6400 in 1/3-stop increments
Power 6-volt 2CR5 lithium battery
Battery performance Approximately 50 rolls (based on Minolta's standard test method, using 24-exposure rolls)
Dimensions 6-7/16x3-7/8 x 2-1/2 in. (163 x 98.5 x 64mm)
Weight 1 lb. 10-1/8oz. (740g) without lens and battery; Quartz Data Back model: 1 lb.10-5/8 (755g) without lens and battery

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