We use Optical Character Recognition (OCR) during our scanning and processing workflow to make the content of each page searchable. You can view the automatically generated text below as well as copy and paste individual pieces of text to quote in your own work.
Text recognition is never 100% accurate. Many parts of the scanned page may not be reflected in the OCR text output, including: images, page layout, certain fonts or handwriting.
A NEW SUBSTANDARD FILM FOR AMATEUR CINEMATOGRAPHY
By C. E. K. Mees
Director of Research and Development, Eastman Kodak Company, Rochester, N. Y.
THE system of amateur motion picture photography which has been worked out by the Eastman Kodak Company is founded on
the use of film smaller than that used in the standard camera and on a new process for finishing it, the object being to reduce the cost of the finished picture to as low a point as possible.
Since this film will be available on the market as a standard film for use in amateur motion picture cameras and has already been adopted by a number of designers for use in cameras which will shortly be available, it is perhaps desirable to describe it somewhat in detail. The film, which is made only on slow-burning safety base, is 16 mm. wide. Fig. 1 shows the dimensions of the film. The picture is one centimeter by seven and one-half millimeters, so that the area of the picture is approximately one-sixth that of the standard picture. Five pictures on the small film therefore occupy the same length as two pictures on the standard film, and the film has forty pictures to a foot, which at standard rate last on the screen two and one-half seconds. The film is made with perforations on each side like the standard film in order to diminish the risk of fogging on the edge when used in the camera, one perforation on each side per picture being sufficient to ensure a steady picture with a small film and having the advantage that it is impossible to misframe a picture.
The film is wound on a reel with a leader and end of perforated black paper so that the camera can be loaded in daylight, the film being protected by the paper. After the film has been wound through the camera, the film is again protected by the paper at the end and can be removed from the camera in daylight.
It is proposed at first to supply the films in standard lengths of 100 and 50 feet, 100 feet of the small film corresponding to 250 feet of the standard film, so that four such spools of film assembled together will give a length of 400 feet, corresponding to the standard thousand foot projection reel. The spool is packed outside in special removable metal cases. (Fig. 2.)
The chief difficulty which is introduced when small pictures are used for motion picture work is the graininess which such a small picture shows when it is enlarged upon the screen. A photographic image of any kind is composed of small clumps of the microscopic silver grains, and when it is very much enlarged these clumps show and give a structure to the image. In Fig. 3 we see at the left, at A,
252