Praktica BX20H

Praktica BX20H - part of BX20 (H-V)-system

Producer data

Producer

Jos. Schneider GmbH

responsible constructor

unknown

production period

1993

no of produced cameras

approx. 150 systems

Technical properties of the camera

shutter type

steplessly working electronically controlled vertical-run two-magnet metal-blade focal plane shutter

exposure time
(possible settings)

view finder

modified fixed eye-level view finder (Pentaprism, field of view: 95%) with field lens with triple rangefinder wedge, truncated microprism screen, ground glass field, 16 multicolored LEDs for shutter speed signaling (right side of the view-finder image) changes their brightness with brightness of the image, on the left side one LED for flash ready signal, "cocked/no cocked" signal (orange color of the aperture setting reflection window)

limited field for reduced negative size

mirror

instant-return mirror

film transport / frame counter

single stroke 125° wind-on quick-release lever with 25° stand off position, accepts BX-motor winder, folding crank rewind knob, auto-zeroing frame counter

lens mount

Praktica-B-mount with EDC (electronic diaphragm control)

self timer

none

battery

works only using special power supply unit

metering system

unknown - optically identical with standard BX 20S

(TTL-metering (25 to 5000 ASA for automatic film speed entry via DX cartridges, 25 to 400ASA for manual film speed entry) using electronic diaphragm control (EDC) for measurement with open aperture using a Silicon photo-sensor, auto exposure compensation, TTL-flash system (!), automatic exposure system with memory key, battery check facilities)

flash system

X-synchronization (1/100), accessory shoe at the top of the pentaprism

flash indication

yes

aperture reflection into view finder

yes

general comments

possibly precursor of BXEDH system

part of special system for police records department with a negative size of 18x24 mm for Bertillon photography for mug shots

systems consists of two cameras:

	BXEDH - that means ED=police records department (Erkennunsdienst) and H=half format (Halbformat) with 24x18mm negative format
	BXEDV - that means ED=police records department (Erkennunsdienst) and V=full format (Vollformat) with 24x36mm negative format

both cameras were integrated in the LIBAS (Lichtbildaufnahmesystem=slide photography system) developed from Dunco inc. and criminal investigation departement as well Jos. Schneider inc, Feinwerktechnik Dresden

collection data

Hummel-No

245a*

Kadlubek-No.

none

body no.

3241306

lens no.

8087001

lens type

Pentacon Prakticar 1:1.8 f=50mm MC

purchase price