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Stasi
Zeiss
  
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SO-3.5.2   14607
Pinhole lens kit for video camera - this page is a stub

SO-3.5.2 1 is a pinhole lens kit, developed around 1981 by VEB Carl Zeiss Jena in Jena (DDR), especially for the East-German security service – Ministerium für Staatssicherheit (MfS) – better known as the Stasi. The set was intended for use with the video surveillance camera's of the Stasi, which usually had a C-mount thread for fitting the lens. Suitable adapters are included in the kit.

At present, this page is used as a placeholder for current and future information about the SO-3.5.2 lens kit. Further information will be added in due course.   
SI-3.5.2 pinhole lens kit

Storage case
SI-3.5.2 pinhole lens kit
Contents of the kit
Pinhole lens with conical cap
Diaphragm setting
SO-3.5.2 parts
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Storage case
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SI-3.5.2 pinhole lens kit
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Contents of the kit
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Pinhole lens with conical cap
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Diaphragm setting
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SO-3.5.2 parts

Parts
The parts of the SO-3.5.2 lens kit



Specifications
  • Focal length
    11 mm
  • Focal ratio
    1:3.5
  • Angle of view
    80°
  • Pinhole
    1 - 3 mm
  • Pupil dist.
    5 mm
  • Image size
    16 mm Ø
  • Resolution
    100 Lp/mm (centre), 40 Lp/mm (edge)
  • Tread
    M24
  • Diameter
    30.1 mm
Checklist
  • Wooden storage case
  • Lens ƒ3.5/11 with adjustable diaphragm
  • 90° adapter (mirror)
  • Adjustable correction disc
  • Fixed C-mount adapter 17.53 ± 0.03 mm
  • Adjustable C-mount adapter
  • Various pinhole lens caps with different openings
Documentation
  1. Sonderobjectiv SO-3.5.2 - datasheet (German) 1
    MfS. Undated.

  2. Sonderobjectiv SO-3.5.2 - description (German) 1
    MfS. Undated.

  3. Sonderobjectiv SO-3.5.2 - lens drawing 2
    Unknown author. 41 May 2006
  1. Document obtained from BStU [2] and kindly supplied by Detlev Vreisleben [1].
  2. Kindly provided by Detlev Vreisleben [1].

References
  1. Detlev Vreisleben, Personal Correspondence
    November 2021.

  2. Bundesbeauftragte für die Stasi-Unterlagen (BStU) 1
    Federal Commissioner for the Stasi-Records.
  1. Full name: Bundesbeauftragte für die Unterlagen des Staatssicherheitsdienstes der ehemaligen Deutschen Demokratischen Republik (DDR) — Federal Commissioner for the Records of the State Security Service of the former German Democratic Republic (GDR) — officially abbreviated to BStU.

Further information
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© Crypto Museum. Created: Friday 26 November 2021. Last changed: Friday, 16 December 2022 - 09:16 CET.
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