International projectionist (Oct 1931-Sept 1933)

Record Details:

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November 1931 NOTES ON THE S. M. P. E. PROGRESS REPORT INTEREST in the adoption of wide film, though dormant for the past six months, is expected to be aroused again with the return of normal economic conditions. The high speed panchromative emulsions introduced earlier in the year have been given exhaustive trial under the severe working conditions prevailing in the studios, both in this country and abroad. General satisfaction has been expressed by the trade on their characteristics. Huse has described a panchromatic film which has the emulsion coated on a support having a neutral gray density of 0.2 which is claimed to minimize trouble from halation. Studio and Location. During the last six months, motion picture studios continued to make their sound recording equipment more portable and to bring the talking picture gradually to the same technical perfection as the old silent picture. Studio Illumination. Very few new new pieces of illumination equipment were introduced in American studios. An addition to the cast silicon-aluminum equipment announced in the previous report is a new spotlight employing a 2,000watt, 115-volt monoplane filament lamp. Sound Recording. Maxfield has shown tht an empirical relationship exists between the placement of camera and microphone, and the acoustic properties of the set. Some eight or ten pictures INTERNATIONAL PROJECTIONIST 39 have been made using the technic, and the results were so well-liked that a more general application of the principles is being made. With a new intensity meter, it is possible to measure sound and noise intensities in sound stages and theatres. Levels from 15 to 100 decibels above the hearing threshold may be measured. The instrument is characterized by its compactness and lightness of weight. Satisfactory recording of frequencies up to 10,000 per second is claimed for the Fidelytone system of sound recording developed in England. An image of the cathode consisting of a long metal strip in an exhausted glass tube is formed on the moving film, the light glow extending along the length of the cathode from the metal anode opposite its center point. The length of the glow varies in accordance with the modulated input of the tube. According to a report from Hollywood, a new dynamic microphone has been introduced which has an essentially flat response from 50 to 10,000 c.p.s. The Metro-Goldwyn-Mayer studio have accomplished an innovation by placing the microphone and associated amplifier in a spherical metal housing. Poor Processing Laboratory Practice. Laboratory processing of negatives and master prints is quite satisfactory but evidence exists that much of this quality is lost in the prep aration of release prints, on which the public judges the value of the entertainment of a picture. Recommedations are being drawn up to correct this serious production defect. Standard Kine Laboratories in England have installed apparatus for working the Hepworth "stretched" negative process. Films taken at 16 pictures per second can be "lengthened" and subsequently projected at higher speeds. It is claimed that "slow motion" films can be made by this method from normal negatives. Projection Equipment and Practice. Unperforated Czaphane film was projecte on a Cinelux projector at a meeting of the French Societe de Photographic held this summer. Although the facilities did not permit reproduction of the recorded sound, it was reported that the demonstration otherwise was successful. Framing of the unperforated film was accomplished by projecting light through images of perforations (printed along one side), onto a selenium cell connected to a one tube amplifier. Splicing is accomplished by treating the surface with a normal zinc chloride solution at a temperature of 140° F. Sound Picture Projection. While there has been some improvement in the quality of reproduced sound in the better type of theatre, during the past year there has been no radical improvement in the devices or in the method of reproduction. Very slight improvement, if any, has been noted in the quality of Hoffmann Soons Every known quality necessary in producing perfect projection is embodied in perfection rheostats. PERF^JiDN ^ SOLDERLESS ADJUSTABLE LUGS Heavily Constrncted Will take wire sizes from No. 4 to No. 4/0 Recognized as the highest standard everywhere [ Sold by all branches of the National Theatre Supply Co., Sam Kaplan, New York; Continental Theatre Accessories, and by your dealer. ] The Only Union-Made Rheostat We Build Rheo. stats for Special Requirements. Communicate With Us Direct. There Is No Obligation. R HOFFMANN SOONS ELECTRICAL & ENGINEERING CORPORATION 387 FIRST AVE., NEW YORK HE OS TATS