DREAM WORLDS by Hans P Bacher

Author:Hans P Bacher
Language: eng
Format: epub
Publisher: Focal Press

24mm Wide-angle lens

50mm Normal lens

200mm Telephotolens

FORMATS

normal format 3 :4

widescreen I : 1.85

cinemascope I :2

panavision I : 2.35

Edison and Eastman Kodak were the first to produce 35 mm film at the end of the nineteenth century. This 35 mm celluloid stripe had perforation holes on both sides to transport it through the camera. The area in between was 1 inch or 2.54 cm wide. That defined the width of the exposed picture, its height was the distance measured between 4 perforation holes, or 3/4 of an inch, or 1.9 cm. That’s why it is called 3:4 format In the old days, one foot of film contained 16 frames, running at 16 frames per second through the camera.

Later, different formats were invented such as Cinemascope. It used the same 35 mm film format but squeezed the picture using an anamorphic lens. The projected un-squeezed format was an impressive 1:2. Very common today is a slightly smaller 1:1.85 format, called widescreen.

And there are the super-widescreen formats such as ToddAO and 70 mm, with the 1:2.35 dimensions. It is widely called Panavision format.

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