2. I.I. S. New Stereo-Camera 
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2.1. Characteristics of the Camera 
Ihe new stereo-camera aims at measuring objects in motion with the high 
accuracy of close range photogrammetry. All necessary operations are made 
automatically. The camera has mechanisms with the following advantages: 
(1) With this camera, one is able to use long roll film as in aerial photo- 
graphy so as to take photographs continuously. 
(2) At the exposure time, pairs of stereo-photographs are taken by use of 
long roll film. To cover the entire film for photographing, the distance 
between the two lenses and the mechanism for transporting the film were 
determined numerically and precisely to avoid unnecessary coverage. 
(3) All procedures such as film winding, shutter charge, film suction and 
exposure time are regulated at a time interval of 1 or 2 seconds and single 
shot photos can be taken. 
(4) Resistance caused by the change of film diameter for the winding action 
is adjusted mechanically by the clutch of the board spring. 
(5) The motor, connected with AC 100 V current, operates the necessary 
automatic cycle. 
(6) Any object distance between 1. 3 m and 5.0 m can be photographed with 
  
helicoid-type focussing. 
2.2 Technical Data of the Camera 
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Technical data of the camera are as follows: 
(1) Camera base 300 mm 
(2) Lenses Orths EL -Nikkor, Focal length 105 mm 
Aperture: f/5.6 
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(3) Recommended object distances: 1.25 m, 2.5 m ; 5m 
with helicoid type focussing 
( Any object distance may be used) 
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(4) Negative film size 56X80 mm 
Usable stereo-format 56X56 mm 
  
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