Color Television Film Recording from a Shadow-Mask Picture Tube

The simplest and probably the most widely used method of transcribing color television picture information from magnetic tape to color film is to photograph a color TV picture displayed on a shadow-mask tube. Although this method can give good results, many examples exist which fall far short of optimum. The authors discuss the chief problems and the solutions they have found. — The chief components of the transcription system are: Ampex VR-2000 tape recorder; CBS Laboratories Image Enhancer, Model 526; RCA Stabilizing Amplifier, Model TA-9; Conrac monitor specially fitted with a Zenith Chromacolor picture tube and with several electronic changes, which are described; 16 mm Eastman Television Recording Camera, Model 2, fitted with a Leitz Noctilux 50mm f/1.2 lens. Control was exercised by means of a combination color bar and 5-step gray scale standardizing test signal and a photometer for measuring picture tube light output. Using the Zenith Chromacolor tube and the Noctilux lens set at f/1.4 it has been found practical to record on Eastman Ektachrome Commercial Film 7252, processed to twice normal speed. Prints are made on Eastman Reversal Color Print Film 7387. Procedures for setting up the monitor to achieve optimum resolution and correct color rendition have been established.

Print ISSN

0361-4573

Published

1971-10

Content type

Original Research

DOI

10.5594/J05726