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Sonderobjektiv SO 2.2 B
Praktica LTL 3 Praktica LTL 3 Praktica LTL 3 black Foticon black Praktica PLC 2 Praktica PLC 2 black Praktica L 2 Praktica L 2 half frame Praktica L 3 ENDO Praktica ENDO noname Praktica ENDOSKOPIE 2 Praktica LB 2 Praktica VLC 2 Praktica VLC 2 half format Praktica RTL ASTRO/MICRO CONVERTIBLE Praktica EE2 SR899 - GSK Sonderobjektiv SO 2.2 B Praktica DTL 2


SO 2.2B = Sonderobjektiv (special lens 2.2B) - Declaimer Number: 14717
works with SR899 (14101) as infrared system for recording distance between 10m and 40m
Producer data
Producer VEB Pentacon Dresden Betrieb des Kombinates Carl Zeiss Jena responsible constructor unknown
development by order of OTS of MfS (Operativ Technischer Sektor des Ministerium für Staatssicherheit=Operative Technical Sector of Ministry of National Security)
production period 1986 to 1989 no of produced cameras 25
Technical properties of the camera
shutter type by two electromagnets controlled vertical-moving metal-blade focal plane shutter exposure time
(possible settings)
SR 899 - MS 
stepless automatic speeds between 1 sec and 1/1000(B, 1/1, 1/2, 1/4, 1/8, 1/15 1/30, 1/60, 1/125, 1/250,1/500, A, MS, )
view finder telescopic sight with special illuminated focussing screen with effective size of 9.6mm x 12.8mm at film plane, adapted to video camera field
(SR 899 -fixed eye-level view finder (Pentaprism) with Fresnel lens and microprism range finder as focusing screen)
mirror removed fixed semipermeable foil-mirror of the SR 899
film transport / frame counter
bulletPentacon Loading-System
bulletfixed electric film winder system with electric motor (Dunker Co.) with one release magnet and camera control electronic
bulletcamera controlled by special control-unit which allows distant shutter release with single or serial shots (minimal every 3s)
bulletframe counter at the front of the camera
lens mount M42x1 via special adapter with special bayonet mount, additionally mount adapter for c-mount
self timer none battery external 9V-DC-voltage for camera and 12 (+3V or -1V) for lens system
metering system TTL-metering (25 to 1600 ASA)  flash system X-synchronisation (1/125)
flash indication none aperture reflection into view finder none
general comments
bulletwave length range 800-900nm
bulletresolution >=120 LP/mm
bulletmaximum elapse time between 10 and 40m: 0.6s
bulletpeak response time of target control: 0.1s
bulletnoise level: max. 40 db
bulletmaximal brightness in target area: 100 Lux
bulletcurrent consumption: 130mA
bulletsee under Vreisleben D: Die Fototechnik des MFS. Das Sonderobjektiv SO-2.2B. PHOTODeal 32(1): 28-29, 2001
collection data
Hummel-No none Kadlubek-No. KWE 2140
body no. 6227 (without additional dot=without standard control unit) lens no. 883
lens type SO-2.2B (2.2/180mm) purchase price 750€



under construction

complete system top view of the system  front view with "shroud" laser detector         lens         laser diode opened system with lens and infrared focussing electronic system bag of SO 2.2 B telescopic sight - focussing screen internal electronic compounds





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Stand: 10. April 2010