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In his paper, which is an outstanding and well-detailed report of an engineering study, Mr. Albin reviews the practices of cathoderay tube photography on motion picture film. He analyzes, from the standpoint of conventional photographic sensitometry, the photographic and electronic aspects of television film recording procedures that are currently in use.
Picture reproducibility is a difficult problem, because the combined gammas of the several elements of a typical television system do not approach unity and therefore an original scene picked up by a television camera cannot be faithfully reproduced by a subsequent linear photographic process without resorting to some practical form of gamma correction.
The author shows that this problem can be solved through the use of nonlinear electrical circuits which are designed to produce an over-all television system gamma of approximately 1.5. Modern photographic techniques can then produce a resulting motion picture film record equals conventional prac j
FRED G. ALBIN
that "
tice in motion picture professional photography/'
Honorable Mention was awarded to Mr. Charles R. Fordyce for his paper, "Improved Safety Motion Picture Film Support/' which appeared in the October, 1948, issue of the JOURNAL.
Mr. Fordyce presents with utmost clarity and in a very readable style the history of the recent development of a safety film support which is suitable for professional motion picture use as a base for either 35mm negative or release positive film. His report follows this new film base through its several stages of labora
C. R. FORDYCE