Business screen magazine (1957)

GUIDE TO PROFESSIONAL MOTION PICTURE FILMS DU PONT SPECIAL PURPOSE FILMS: CONT'D. DuPont Fine Grain Low Contrast Positive 824 B — 35mm DuPont Fine Grain Low Contrast Positive 824 A — 16mm A fine grain film for photogrcrphing either negative or positive images from television monitor lubes. The low contrast of this film makes it especially suited for prints which are to be telecast. May be processed in picture negative or release positive baths depending on contrast level desired. When making 1 6mm low contrast TV prints, 828 A should be used instead of 824 A which is short pitch perforated for use in kinerecording cameras. DuPont TV Recording Film 834 B— 35mm DuPont TV Recording Film 834 A— 16mm A fine grain, low contrast emulsion for photographing either negative or positive images on television monitor tubes. This film is about 2V2 times faster than 824 type. Eastman Kodak Company: Camera Films NEGATIVE TYPES: BLACK & WHITE Eastman Background-X Panchromatic Negative Types 5230 (35mm) & 7230 (16mm} A very fine grain, medium speed negative material intended for use in making original negatives from which prints are to be made for background projection. It is also suitable for general exterior photography. Background-X for exterior scenes and Plus-X for interior scenes form an ideal combination for production work, since their speed relationship is such that apertvires of the same order can be employed for both exteriors and interiors. Eastman Plus-X Panchromatic Negative Film iType B), Types 4231 (35mm) and 7231 (16mm) A high speed, fine grained negative material, well suited to general interior photography and to exterior photography under average lighting conditions. This film represents an excellent balance between the maximum desirable speed for most purposes and the finest grain obtainable at that speed. It is widely used for general production work and is also suitable for making composite projection background scenes, since its speed is sufficient to permit the use of small apertures in order to secure good depth of field. Eastman Tri-X Panchromatic Negative Film Type 5233 (35mm) & 7233 (16mm) An extremely high speed negative material of medium graininess. It is particularly suitable for newsreel work and for exterior and interior photography under adverse lighting conditions. It is also useful where it is desired to obtain great depth of field without an increase in illimaination. Eastman Infrared Negative Film Type 5210 (35mm) Sensitive to infrared radiation and the blue and far red light of the visible spectrum. This film can be exposed with filters ranging from the Kodak Wratten Filter No. 15 (G) to the No. 87 to produce unusual effects in sunhght. The infrared sensitivity allows the reproduction of distant detail ordinarily obscured by atmospheric haze. When used in sunhght with a suitable filter, such as the Kodak Wratten A or F, to absorb blue Ught, it produces a realistic illusion of night, the blue sky photographs very dark. REVERSAL TYPES Eastman Plus-X Reversal Film Type 7276 (16mm) A high speed reversal-type panchromatic film suitable for general exterior photography and for indoor work where ample artificial light is available. It is also useful for television photography for either studio or location work. When processed by reversal methods, it yields a positive image having good contrast ond exceptionally low graininess. This positive is suited for either projection or duplication. When necessary, this film may also be used as a negative material, using conventional processing methods, although this practice results in some sacrifice in speed and graininess characteristics. Eastman Tri-X Reversal Film Type 7278 (16mm) A high speed reversal-type panchromatic film suitable for general interior photography with artificial Ught. It finds wide application in television studio photography and in making pictures of news and sporting events under difficult artificial illumination conditions. It may also be used under daylight conditions and is particularly useful for making sports pictures at regular speed or slow motion pictures in weak light or late in the day. When processed by reversal methods, it yields a positive image having both good contrast and graininess characteristics. This positive may be used for either projection or duplication. When necessary, this film may also be used as a negative material, using conventional processing methods, although this practice results in some sacrifice in speed and graininess characteristics. CAMERA FILMS: COLOR Kodachrome Commercial Color Film Type 5268 (16mm) This film is a camera film designed to provide a low contrast color original from which a color release print of good projection quaUty can be made on Reversal Color Print Film, Type 5269. The low-contrast original is not intended for projection; its contrast is purposely low so that the contrast obtainable in its print is comparable with the contrast of a good original made on Kodachrome Film, DayUght Type and Type A. Eastman Color Negative Film Type 5248 (35mm) This film is a multilayer color film intended for use in conventional 35mm motion picture cameras. The film consists essentially of three light-sensitive emulsions, each sensitized differently, and coated on a safety support. Incorporated in the emulsion layers are dye couplers which react simultaneously during development to produce a separate negative dye image along with the silver image in each layer. The silver images are removed later by bleaching. Two of the dye couplers are themselves colored. The original color of these couplers is discharged during development in proportion to the development of the emulsion. The remaining colored couplers serve as automatic color correcting masks to aid in obtaining good color reproduction when the color negative is printed on the companion product, Eastman Color Print Film, Type 5382 or 7382, or on other color materials. (CONTINUED ON THE FOLLOWING PAGE 64) NUMBER 3 VOLUME 18 957 63