The Cine Technician (1953-1956)

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August, 1953 THE CINE-TECHNICIAN 103 l,vlJL*-lJLL Cine-panoramic. The ' compressed ' picture obtained with Anamophot Lens point is that the shooting of the music can be carried out as slowly as desired, thus permitting the composer to plan precisely and to deliberate on the execution of the music as much as on the composing. The following new standards have been published by the British Standards Institution and are obtainable from 24 Victoria Street, S.W.I. British Standards for Test Films for 35 m.m. Cinematograph Projectors (in 5 parts). B.S.1985 : 1953. 2/ net for each part. Picture as projected by Anamophot Lens Part 1. Part 2. Part 3. Part Part Multi-frequency test films. Buzz track test films. 1000-cycle balancing and sound level test films. Sound focusing test films. Scanning beam uniformity test films (laboratory and service types). The standards are intended to provide a basis for the uniform production of test films for use by projector manufacturers, users, and service engineers. They specify the essential requirements of the films, but not the methods of producing them. Part 1 relates to a film for testing and adjusting the range and level of frequency response of the projector sound system at a projection speed of 24 f.p.s. The series of test frequencies covers the range 60 to 8000 c/s and is suitable for both laboratory and service use. Part 2 relates to a buzz track film for checking the position of the scanning beam. Part 3 relates to a film for use in balancing the respective power level outputs from two or more projectors. This film, if calibrated and supplied with a calibration record, may also be used to determine the overall sensitivity of the sound equipment. Part 4 relates to a film which may be used for the adjustment of the focus and azimuth of the sound-optical system in the projector. Part 5 relates to a film for determining the uniformity of the scanning beam in the sound-optical system in the projector. Two types of film are specified, one with a sound track suitable for use in laboratories and the other with a track suitable for use in the routine maintenance and servicing of the equipment. British Standard for Measurement of Frequency Variation in Sound Recording and Reproduction (B.S.1988:1953). Price 1/-. The recently published B. S. 1988 : 1953, "Memorandum on the measurement of frequency variation in sound recording and reproduction," draws attention to the lack of uniformity, in this country and elsewhere, in the practice of and the terminology associated with the Qt^-a otstjm 3 mjfar nujnt&Kjt/r* 4 pistn msgnetitfun Top picture shows the three magnetic tracks; bottom, the four magnetic tracks measurement of undesired frequency variation in sound recording and reproduction. The memorandum gives recommended terms and definitions, and general recommendations are made upon the criteria to be taken in measuring undesired frequency variation in sound recording and reproduction. . B.S.I. MOVES: By Monday, 17th August, the British Standards Institution will be in full operation at its new premises : 2 Park Street, W.l (Telephone MAYfair 9000). The removal will extend over the whole of the preceding week. Although during this period it will inevitably cause some disturbance of day-to-day activities, the B.S.I, has arranged that services to its members and Committee members will be fully maintained. As already announced, the new building will contribute to more efficient working by concentrating the B S.I.'s scattered departments under one roof. It will also provide increased and more convenient accommodation for the 13,000 specialists who attend the 3,500 B.S.I. Committee meetings held during the course of each year.