International projectionist (Jan-Dec 1957)

TELECASTS (Continued from page 19) screen system has immediate application to closed-circuits. The anamorphic lens designed by Rosin is also adaptable to motion picture camera use for coupling with prime lenses of 40-, 50-, 75-, and 100-mm focal lengths. By the insertion of two pins projecting from the camera lens mount into slots on the driving member of the Scanoptic lens, simultaneous focusing of both anamorphic and prime lens is accomplished by a single rotating motion. Magnetic Sound for TV WIDESPREAD USE of magnetic sound for newsreel and feature films is expected in the TV industry. Announcements by the two major companies in TV indicate a trend to exclusive use of magnetic. RCA has now made available magnetic sound conversion kits for TV projection, particularly for their TP6 and TP16 projectors. CBS has adopted pre-striped magnetic sound on 16-mm film for its news programs. Since news events happen anywhere and at any time, speed of processing is therefore of paramount importance. This previously influenced CBS in its choice of 16-mm film, and a single, rather than double, photographic sound system. But it is admitted that the quality of the product was nowhere near that of live programming. In 1955, CBS began an engineering program to investigate the possibilities of pre-striped magnetic sound — application of magnetic material to the film be 5 PUCES _ NOT } HOLDING • Film breaks are costly. Play safe by using JEFRONA All-purpose CEMENT Has greater adhesive qualities. Don't take our word for it. Send for FREE sample and judge for yourself. CAMERA EQUIPMENT CO., INC. DEPT. J 315 West 43rd Street New York 36, N. Y. JUdson 6-1420 fore its exposure and development. Quality improvements and operational advantages were sufficient enough to cause the change to pre-striped magnetic. Although complete use of magnetic sound is not yet a fact, the availability of equipment, and the improved reproduction would indicate that a major swing to magnetic is now in process. New GPL Monitors GENERAL PRECISION Laboratory has announced a new line of video monitors that incorporate a number of advanced features. The units are designed to provide high definition pictures for both broadcast and closed-circuit systems. Horizontal resolution of all models is in excess of 600 lines, video bandwidth is flat to 8 mc ±2 db. Aluminized kinescope tubes in the 14-, 17-, and 21inch units have 70° deflection systems, and the 24-and 27-inch, 90° systems. Designed for continuous duty operation with minimum maintenance, the monitors are constructed in both cabinet and rack mounted versions. Covers or front panels of each unit are easily removable for cleaning picture tube face and servicing. A lightweight, wrap-around aluminum housing, and a 5° front panel tilt to reduce glare and reflection are features of the 17-inch model. The kinescope tube may be removed without disturbing the chassis, and operating controls are recessed for protection behind a hinged panel located below the screen. Basement Pay-TV? METROPOLITAN LIFE Insurance Co. is reported interested in a basement-toliving-room closed circuit system for its 35,000 apartment buildings in seven cities. Initial demonstration was at the St. Regis Hotel in New York. Hallmore Electronics division of Siegler Corp. set up the compact, self-contained studio which is equipped to handle 35-mm film, and modest live shows. Reportedly costing less than $15,000, CURTAIN CONTROLS, TRACKS and SPECIAL OPERATING DEVICES VALLEN, Inc. AKRON 4, OHIO the studio can be made ready to operate in one day. Installation of special receivers is estimated at $50 a set. Although denying that any extensive preliminary engineering has been done in their housing projects, Metropolitan Life is reported to be conferring with International Telemeter Corp. Services Theatre by Radio Altec service engineer James C. Hager, who is also a radio amateur ("ham") with a station in his own home, serviced the Morgan Theatre, Grundy, W. Va., by "ham" radio during a recent flood. In a triangular short-wave communication between Hager, another "ham" in the flooded community, and the manager of the theatre, symptoms of sound trouble were described and instructions transmitted, resulting in repair of the difficulty at long distance. New Technicolor Plant Technicolor Companies have completed final plans and arrangements for their new plant which is to be built near their present Hollywood headquarters. Costing around $2,000,000, the establishment will house some 400 employees. OF PROJECTION LENSES Prime Lenses F1:0 Light Collecting Speed INTERNATIONAL PROJECTIONIST • JULY 1957 33