Business screen magazine (1938)

PROJECTION LAMPS • Few men, except those especially eniiaged in electrical research, appreciate the skill and patience required in the construction of projection lamps. Lamps ranging in wattage from .50 to '21(10 arc used in commercial film projection and a most important clement in the success of any show depends on the steady clear brilliance with which the images may be viewed on the screen. To this end, a few suggestions are in order: Look to your projector manufacturer for adequate lighting brilliance . . . make sure that the lamps supplied meet the requirements under which a majority of your showings will be held. Insufficient wattage simply means a bad show. This applies to the soundslide showing as well as motion pictures, although the wattage required for the former will generally be a good deal less. In very few cases, however, is the 50 watt lamp (for slidefilms) adequate for a commercial performance excepting under absolutely in 16 & 35rr from Neumade Pn Corp., >'ew York City lable odet> ¥n^,^ kwi^ general u^e to cial projeriior ideal conditions of darkness and before a very small group of not more than several persons. The p r i n c i p ;i 1 .sources of projection lamp manufacture, are General Electric, Westinghouse and Radiant Lani]i Corporation. Research engineers in any one of these companies will advise but projection manufacturers arc almost as equally well skilled. Some idea of the precision required in turning out lamps was gained recently when a technical representative of Business Screen visited the Radiant Lamp plant at Newark. New Jersey. "Most of the work here, "he c^'me'r" wntcs, "Is haud and precision work of the highest order. Every lamp is accurately centered and checked several times after various operations to see that filaments are perjectly centered." The Business Executive' s CAMERA A Bell & no*,.tI Fil is popular among exe' lives for personal n • Some of the enthusiasm with which business executives naturally greet the commercial film medium larries over into pergonal affairs. Not a I' w advertising and sales executives have become ardent camera fans . . . which may explain the deference with which they now view the skillful lensing of their company's own commercial productions. AYhile a far cry from the highly-developed professional Mitchell. Bell & Howell and DeVry of the commercial production lots, the ama ^ ^ teur's camera has been equipped with top-notch lenses and there are gadgets and attachments available for almost any kind of "trick" technique. You can The DeVr. camera is •wipe" and "'dis ."kf^.^molTei.""""' "' solve" with all the skill of a Birch or Steiner, even if your technique is a little ragged at the edges. Here are a few concerns who offer catalogs and handbooks with plenty of variety in models for the better-than-average amateur: Agfa Corp.. Binghamton, New York. Agfa Cameras and Accssories. Ampro Corporation, 38,'?9 No. Wstern Av., Chicago. Gumhiner Sound Motion Picture Camera. Bell & Howell Company, 1801-15 Larchmont Avenue, Chicago. Filmo Motion Picture Cameras and Accessories. Burleigh Brooks, Inc.. 1-27 W. 4-2nd St.. New York City. Rolleijlex and Rolleicord "Still" Cameras; Accessories. Inc.. Ann DeVry Corporation. 1111 Armitage Avenue. Chicago. DeVry Sound & Silent Motion Picture Cameras: Recorders. Eastman Kodak Company. Rochester. New York. Cine-Kodak motiori picture cameras and accessories. International Industries. Arbor, Michigan. Argus Cameras & Accessories. E. Leitz, Inc. 730 Fifth Ave., New York City. Leica Cameras and Accessories. Victor Animatograph Corporation., Davenport, Iowa. Victor Motion Picture Cameras and Accessories. ♦ Some use of still cameras in commercial fields is being made by salesmen, research workers and others who use both miniature and reflex equipment. A nationally known florist makes Kodachrome shots of prize-winning gardens developed from his plants and shows them to garden clubs. A heavy machine salesman takes pictures of installations for his records. Hundreds of real-estate concerns regularly employ the camera for listing desirable properties. The Otis Elevator Company has equipped representatives with projection apparatus as have many other firms. The Cunibiner Sound Camera (exclusively represented here bv Ampro Corp., Chicago | is synchronized for sound & silent movie production. Rolleicord modelhave the same reflex viewer principle. /njand waters of the Pacilic Coast, Alaska and Hawaii provide the scenes Iot the latest Dowling and Browneli industrial pictuie. ACTION STARTS ON OUR PICTURE NUMRER 100 100 pictures is not a big volume of production for a company specializing the last 10 years in industrial films. But the fact that 31 of these 100 pictures were repeat jobs, for the same customers for whom we previously produced, tells a real story of achievement. This strong indication of customer satisfaction is all the testimony necessary to prove sincerity of effort and quality of service. DOWLING and BROWNELL 6625 Romaine Street Hollywood, California 'Full data on our motion picture or slide tilm service will be sent on request. ^m DUSTPROOFFIREPROOF HUMIDIFIED Specially designed for commercial and educational users — heavy gauge all steel humidified cabinet properly protects, preserves and files your slide films in the most practical, efficient way. Model MF-6 (illusrroted) all steel cabinet with six drawers for l'/;" film strip cons or loose rolls. Films may be fited by subject as each drawer contains six adjustable dividers — also used to provide facilities (or larger cons or rolls. Concealed humidor in base tiumidifies entire cabinet. Overall size 15" wide, 12" deep, 13" higti. Complete line of 16m and 35m equipment *o> JWumaae PRODUCTS CORP.