Auto-Clack
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| Rietzschel Auto-Clack image by yalluflex (Image rights) |
The Auto-Clack is a folding bed camera for 9x12cm film plates produced by the German company Rietzschel from 1908 till c.1915[1].
It has a double-extension.
Possible lens/shutter combinations are[1] :
- Apotar f/6.3 13.5cm
- Linear f/6.3, f/6.8 or f/5.5 13.5cm
- Sextar f/6.8 13.5cm
in an Ibso or Compound leaf shutter
A special mechanism keeps the lensboard parallel to the film plane.
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| Auto-Clack parallel mechanism image by yalluflex (Image rights) |
  
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| A.H Rietzschel Germany Auto-Clack 9x12cm, Apotar f6.3/135mm lens in Compound shutter Images by yalluflex. (Image rights) |
Notes
- ↑ 1.0 1.1 McKeown, James M. and Joan C. McKeown's Price Guide to Antique and Classic Cameras, 12th Edition, 2005-2006. USA, Centennial Photo Service, 2004. ISBN 0-931838-40-1 (hardcover). ISBN 0-931838-41-X (softcover)., p.824
