Specifications for Pentacon Praktica BX20

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Made in	Germany (ex-RDA) from 1987 to (After) 1992
Frequency on French flea markets/yard sales:	Frequent
Inventory #:	242
Maker (if different from the brand):
Brand’s known addresses:	Dresde Allemagne (ex-RDA)
Mc Keown's page:	778 (12th Edition)
Competitors:



Camera Type :	Reflex SLR

Sensor
Image sensor:		Size (mm) :
Megapixels:		Image size (max) :

Film / plate / Sheet film and other
Film type:	135 (L'échelle est donnée par une pièce de 5 centimes.) Le négatif obtenu à partir de ce film mesure habituellement 24 x 36 mm. Lancé par Kodak en 1934 sous la forme actuelle d'une cartouche jetable. Préalablement Leica et Contax utilisaient bien ce film, mais dans des cartouches rechargeables.

Maximum number of exposures:	36
Frame format (metric):	24 x 36 mm	Frame format (imperial):
Dimension of the dual-format frames (metric):		of the triple-format frames (metric):
Interchangeable back:	No	Magazine back:	No
Advance system:	Levier	Position :	Sur le capot
Rewind system:	Manivelle	Position :	Sur le capot
Rewind system options:
Video	Non

Exposure control
Meter:	Au Silicium	Meter location:	TTL
Metering:	Automatique priorité diaphragme - Position semi automatique	Metering mode:	Spot
IL/EV:	EV0 à EV17	Exposure lock:	Oui
Film sensitivity:	12 à 3200 Asa


Shutter
Shutter brand:	-	(Visit List of shutters)
Shutter model:	- (id 0)
Shutter type:	Plan focal vertical
Shutter composition:	Lamelles métalliques
Shutter cocking:	Automatique avec l’avancement du film
Shutter speeds:	-
Shutter release:	Souple dans le déclencheur
Double exposure prevention:	Oui
Timer:	Mécanique
Timer signal:
Timer duration:	10s environ

Lens
Original lens type:	Standard
Lens mount:	Interchangeable
Lens brand:	Pentacon
Lens model:	Prakticar MC
Mount:	Baïonnette de la marque (Voir la monture)
Diaphragme:	A iris dans l'objectif
Optical formula:	6 élements	Original lenght:	50 mm
Maximum aperture:	1,8	Minimum aperture:	16
Minimal focusing (metric):	33	Minimal focusing (imperial):
Focusing mode:	Stigmomètre et Microprismes	Focusing control system:	Spot
Focusing memorization:	Oui

Power alimentation
Original battery model:	4 SR 44/4 LR 44 (6 volts-Cylindrique-oxyde d'argent) (Japon-4 G 13) (Saft Leclanche-4 SR 44) (CEI-4 SR 44/4 LR 44) (Ucar-544) (Mazda-KR 28) (Mallory-PX 28) (Varta-V28PX / 4028)	Original number of batteries:	1
Remplacement battery type:		Number of replacement batteries:

Exposure
Exposure counter:	Mécanique progressif	Exposure counter reseting:	Remise à zéro auto

Bellows
Bellow extension:
Bellow shape:		Bellow color:
Bellow material:		Bellow corners:
Bellow position:		Bellow edges:
Bellow attachement:		Cadre du soufflet:
Support intermédiaire du soufflet:
Min. extension:		Max. extension:
Vertical shift:		Horizontal shift:
Vertical tilt:		Horizontal tilt:

Viewfinder
Number of viewfinder:	1
Viewfinder type:	Interne fixe	Second viewfinder type:	non
Bright-frame finder:		Parallaxe:
Rangefinder image shape:		Rangefinder image color:
Rangefinder image type:		Technique d'affichage dans le viseur:	Diodes
Exposure parameters display;	Yes	Exposure parameters and auto modes display:
Flash charging signal:		Frame counter:
Over/under exposure signal:		Focusing points

Monitor
Size (inch)		Dots :

Accessory shoe
Accessory shoe:	Fixe	Shoe location:	Sur le capot
Shoe parallax correction pin:		Hot shoe:	Oui
Number of accessory shoes:	1

Flash
Flash sync:	X	Flash sync speed:	1/100e
Number of connections:
Built-in flash:	Non	Type of built-in flash:
Flash options:		Guide Number (GN):	N/A
Anti-red eye option:		Anti-red-eye mode:

Dimensions and weight
Minimum dimensions (collapsed):	14,1 x 8,8 x 4,9 cm	Weight:	510 (Boitier nu) g
Maximum dimensions (extended):	cm

Miscellaneous
Depth of field preview:	Oui	Manual mirror lock-up:
Miscellaneous: