International projectionist (Jan 1943-Dec 1944)

S.M.P.E. ABSTRACTS {Continued from page 26) films, it is almost as convenient to use in the ordinary 16-mm camera. Like all color processes, however, it has its limitations which, if not understood, may lead to unnecessary disappointment; however, these may be avoided. It must be recognized at the outset that there is'-no "perfect" color process. The usual requirements for a satisfactory color process include: (1) A suitable grey scale and. .comparable color-density scales. (2) Accurate reproduction of color. (3) Good differentiation of color. Unfortunately with present integral tri pack films each of these requirements conflicts with at least one of the other two. If these simple facts are recognized, it is immediately apparent that "run-of-the-mine" duplication cannot fulfill the requirements STATEMENT OF THE OWNERSHIP, MANAGEMENT. CIRCULATION, ETC., REQUIRED BY THE ACTS OF CONGRESS OF AUGUST 24, 1912, AND MARCH 3, 1933, Of International Projectionist, published monthly at New York, N. Y., for October 1, 1944. State of New York \ County of New York J ss' Before me, a Notary Public in and for tin State and county aforesaid, personalty appeal"'' R. A. Entracht, who, having been duly sworn according to law. deposes and says that she is tin Business Manager of International Projectionist and that the following is, to the best of her knowledge and belief, a true statement of tinownership, management (and if a daily paper, the circulation), etc., of the aforesaid publication for the date shown in the above caption, required by the Act of August 24, 1912, as amended by the Act of March 3, 1933, embodied in section 537, Postal Laws and Regulations, printed on the reverse of this form, to wit: 1. That the names and addresses of the pub Usher, editor, managing editor, and business man agers are: Publisher, International Projectionist Pub. Co., Inc., 19 West ¥■ Street, New York 18, N. Y. Editor, W. L. Lightfoot, 19 West 44 Street, , New York 18, N. Y. Managing Editor, None. Business Manager, R. A. Entracht, 19 West 44 Street, New York 18, N. Y. 2. That the owner is: International Projectionist Pub. Co., Inc., 19 West 44 Street, New York 18, N. Y. R. A. Entracht, 19 West 44 Street, New York 18, N. Y. 3. That the known bondholders, mortgagees, and other security holders owning or holding 1 per cent or more of total amount of bonds mortgages, or other securities are: None. 4. That the two paragraphs next above, giving the names of the owners, stockholders, and security holders, if any, contain not only the list of stockholders and security holders as they appear upon the books of the company but also, in cases where the stockholdei or security holder appears upon the books of the company as trustee or in any other fiduciary relation, the name of the person or corporation for whom such trustee is acting, is given; also that the said two paragraphs contain state ments embracing affiant's full knowledge and be lief as to the circumstances and conditions undet which stockholders and security holders who do not appear upon the books of the company as trustees, hold stock and securities in a capacity jther than that of a bona fide owner; and tliis affiant has no reason to believe that any othei person, association, or corporation has any inter est direct or indirect in thg said stock, bonds, or other securities than as so stated by him. R. A. Etatraoht, Business Manager Sworn to and subscribed before me this 9th day of October, 1944. (Seal) BERNARD SCHWARZ Notary Public, New York County Clerk's No. 149, New York County Register's No. 196-S-5. My commission expires March 30, 1945. of all three. Ordinarily No. 1 and No. 3 are favored over No. 2, and the result is quite satisfactory for practical purposes. Unfortunately, in medical work, where accurate reproduction of color is often desired for diagnostic and similar purposes, some of the very common biological stains are not reproduced satisfactorily, in integral tripak color films. In such cases, and in other specialized cases where the absorption spectra are "unfortunately" located, color accuracy must knowingly and intentionally be sacrificed for color differentiation. Some transmission curves of materials whose characteristics have not been previously published are given. Much of this material has been used commercially for several years and has been helpful in solv ing, in a practical way, some of the duplicating problems that arise in the course of everyday commercial laboratory work. 8,000 PICTURES PER SECOND H. J. Smith Bell Telephone Labs., Inc. The factors involved in the successful design of a high-speed motion picture camera with a maximum taking speed of 8,000 pictures per second are described. This camera is of the rotating compensating prism type, with continuously moving film. The pictures taken with this camera are 8-mm frame size on 16-mm film and can be viewed with any standard 8-mm projector. OCTOBER 1944 29