International photographer (Feb-Dec 1929)

Thirtv-two The INTERNATIONAL PHOTOGRAPHER September, 1929 ner the blue and green transparency will, when viewed in blue and green light, reproduce the respective color sensations of the original subject. The three records may now be combined and the natural colors of the subject reconstructed by presenting each transparency with its proper filter in a viewing instrument. This may be done by projection with the use of a triple lantern in which case the red, green and blue transparencies will be projected simultaneously from the lantern forming one picture in natural color on the screen. This process of color photography reached its highest development in the hands of Mr. F. E. Ives, whose Kromscope has never been surpassed for absolute fidelity in color reproduction. This, then outlines very briefly the additive process of color photography. The triple lantern is wasteful of light and there are other defects in the additive process which make it somewhat unsatisfactory commercially. The subtractive process is a more commercial method and is the much more widely used. In subtractive processes the three negatives through the red, green and blue filters are taken as in the additive process but they are printed to be used as superimposed prints, each print being made in a color which is complimentary to that of the taking filter. Let us consider our discussion of the subtractive process as confined to still photography in the making of prints. When we print from the red sensation negative we are printing from the thinner pa its of those parts which represent the absence of red in the subject, hence the red sensation negative must be printed not in red, but in a color which completely absorbs all red. In other words, the red negative is printed in its complimentary color that is blue-green. The green negative, therefore, will be printed as magenta, and the blue negative as yellow. Superimposed in full strength these colors absorb all color and the result is either black or gray according to the amount of light reflected. Intermediate colors are produced by the mixture in various proportions of the three fundamental colors, while the total absence of color will produce white, provided we are printing for example on white paper or if we are printing a transparency to be viewed by white light. It will be observed that in this case we start with white light from which we produce color by subtracting various colors, hence the name "the subtractive process." These two processes may be differentiated one from the other very simply as follows: The additive process is one in which we start with colored light from which we produce white, while the subtractive process is one in which we start with white light and from which we produce color by subtracting various colors. The present day commercial processes are most generally based upon the subtractive principle and it is quite probable that those processes which will be most successful commercially, from the motion picture viewpoint, will be those making use of this principle. THE RIGHT MAKE-UP With the recognition of color photography by the producers, the question of suitable make-up for a particular color process is of utmost importance. After considerable experimenting, the firm of Max Factor have evolved a complete line of make-up for use with the Multicolor process. Without consulting Multicolor, the artist has merely to order through Max Factor, particular make-up desired, thus eliminating the old worry of "what make-up shall I use?" '%? P. J. Danby, an exhibitor of Sydney, Australia, is sojourning in Tek-Nik Towne. He and our Len Roos hobnob together when Len is rambling around in the Orient. Mr. Danby declares that there are no pictures like the Hollywood product. GOOD SUPERVISES "GOLDEN DAWN" Frank B. Good, one of the most widely known cameramen in the profession, has been appointed as chief Technicolor supervisor for the Warner Brothers' Productions. Brother Good is now in charge of the Technicolor unit engaged in photographing "Golden Dawn," a Vitaphone feature adapted for the screen from the famous Shubert operetta. BROWN -ASHCRAFT cient Silent ARC E^ — A N D — CLIMAX INCANDESCENT Studio Lighting Equipment SALE AND RENTAL Everything Mechanical and Electrical for the Studio CINEMA STUDIO SUPPLY CORP. HARRY D. BROWN 1438 Beechwood Drive Phone HO. 0513 Hollywood, California