Journal of the Society of Motion Picture and Television Engineers (1950-1954)

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hat four filters mounted on a turret nside the lens mount are an integral >art of the unit. The filters included ire yellow, red, daylight conversion and kylight. Data on CinemaScope, VistaVision, >-D, Todd-AO, 16mm professional and :ameras for television are described mder their representative sections. In iddition, Mitchell Camera Corp. dereloped an improved "follow focus atachment" for professional studio photog•aphy. It permits NC, standard and 6mm Mitchell cameras to be used for •apid changes of focus with full control >f picture framing and lens focusing :ven at close critical distances. The 35mm Arriflex was made availible in a blimp and with an improvedype gyro-tripod head. Both the 35mm md 16mm Arriflex cameras are now :quipped with optical bench-type attachnents (Fig. 11) for the use of long-focalength lenses. An interesting new nicro-stop-motion device for 16mm cameras was announced by Werkstatt uer Feinmechanik of Berlin. 1 6mm Projection A new 16mm projector with a tungiten source is now equipped with a ihutter which shifts from three inter•uptions per frame for operation at silent speed to two interruptions per rame at 24 frames/sec to gain light mtput. Philips41 announced a new 1 6mm projector, Type EL-5000 with a SO0 pulldown, increasing the light outDut from a conventional 50% to 67%. Vew Color and Black-and-White Films Eastman introduced their Type 5248 Color Negative Film, Type 5382 Color Print Film and Type 5245 Color Internegative. These films, together with Fype 5216, Panchromatic Separation Film, already available, filled all requirements for color motion-picture production including special effects.42-43 The Fig. 11. The 35mm Arriflex camera. 35mm Color Negative incorporated coupler multilayertype film which is developed to a negative dye image. Some of the couplers are themselves colored and produce color-corrected images. The film is balanced for 3200 K incandescent illumination with ASA exposure index of 25. The Color Print Film is an incorporated coupler multilayer-type film for use on suitably modified continuous contact motionpicture prints, or from color separation negatives on registering prints. The Color Internegative is a 35mm incorporated coupler multilayer-type film containing colored couplers which result in color-corrected images. Ansco introduced their Type A-44 high-speed tungsten balanced color negative film with an exposure index of 25. Fifteen feature pictures were photographed with this new Ansco film during 1953. Du Pont introduced two new fine-grain 16mm films, the Rapid Reversal Pan Type 930 and High Speed Rapid Reversal Pan Type 931. These films permit rapid processing and have superhardened emulsions which permit the use of elevated processing tern Daily: Progress Committee Report 349