The Morgana Color Process

The B & H “Morgana” process is an additive color process. Each successive picture frame is analytically photographed through a red and a blue-green filter alternately. The conventional color filter wheel has been replaced by an oscillating element that brings the proper filter into position between the lens and the film at each exposure. Regular panchromatic reversal film is used. The normal photographic speed is 24 picture frames per second though other speeds can be used. — During projection two successive frames move forward and one backward, or in reverse, in the following order: 1–2; 1–2–3; 2–3–4; 3–4–5; etc. The result is that, although the film is running at a linear speed of 24 frames (1 2/3 feet) per second, 72 frames are alternating at the aperture during the same length of time, each picture frame being projected three times on the screen. This accrued projection speed eliminates color flicker and greatly reduces color fringing. A conventional filter wheel rotating before the projection lens at a speed of 2160 rpm. synthetically produces the impression of color during projection. Photographic filters are now available for panchromatic reversal 16-mm. film for daylight or tungsten filament incandescent bulbs, selected for proper analysis of color during the photographic process in accordance with the light radiation characteristics of the source of light used.

Print ISSN

0097-5834

Published

1933-11

Content type

Original Research

DOI

10.5594/J16617