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• To record the history of the large format movies and the 70mm cinemas as remembered by the people who worked with the films. Both during making and during running the films in projection rooms and as the audience, looking at the curved screen.
in70mm.com, a unique internet based magazine, with articles about 70mm cinemas, 70mm people, 70mm films, 70mm sound, 70mm film credits, 70mm history and 70mm technology. Readers and fans of 70mm are always welcome to contribute.

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70mm film projection lenses for the DP70
A gallery of typical DP70
70mm projection lenses

Read more at in70mm.com
 
Written and photographed by: Thomas Hauerslev Date: 02.05.2013
Todd-AO Cine Apergon

A presentation of the most common 70mm projection lenses of the 1960s.

Details From: Construction of the Philips “All Purpose” projector DP70

The Todd-AO system requires a very large optical system. The size of this system determines that of the lens holder. The lens is focused by means of the knob underneath the carriage over which the entire lens holder slides during focusing; this adjustment is free of any play. Special attention has been paid to the precision of this adjustment, since either a too fine or a too coarse adjustment may render focusing difficult.
 
More in 70mm reading:

DP70 - The Todd-AO Projector
DP70 Story
DP70 Serial Numbers

Todd-AO
70mm Projectors


Internet link:

 
70mm Cinerama


 
 
ISCO T-Kiptagon with magnifier

 
 
Ultra Panavision 70

Motion pictures photographed in MGM Camera 65 / Ultra Panavision 70

 
 
Dimension 150

Motion pictures photographed in Dimension 150

 
 
Todd-AO prototype projection lens

 
 
A long Todd-AO Cine Apergon

Cine Apergon
 
 
   
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Updated 07-01-21