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.
THREE-DIMENSIONAL MOTION PICTURES an expansion lens on the projectors when showing the pictures. The film in both systems being the standard 35 mm. The introduction of wide film pictures present many optical problems, for the producer, the exhibitor, and the manufacturer of motion picture equipment, these problems were well covered in a paper prepared by W. B. Rayton, of Bausch and Lomb Optical Company, 1 1 • I /\ o /\ JrJ," back in 1930. The employment of film wider than the standard 35 mm. seems imminent. No one can say whether we will have to deal with one size or several, but, however that question may be settled, the difficulties encountered in designing adequate optical systems are of the same kind in all cases but differ in degree with the variations in width of film and size of projected image. It seems probable that they are of sufficient interest to justify a brief statement of them and of the degree to which we have been able to meet the requirements. It will probably not be out of place first to set forth the reasons which are impelling the industry to take a step involving such drastic changes in equipment while it is still struggling with conversion of equipment to permit sound pictures to be made and reproduced. While there may be other reasons, there are two, at least, discoverable by a brief consideration of sound pictures. The first rests on the fact that in the sound- on-filrn processes part of the area formerly available for the picture now has to be given up for the sound track. The second reason rests on the possibilities in herent in sound pictures which were lacking in the silent pictures of presenting entertainment more of the nature of spoken drama of the stage. Although the second of these conditions leads to a demand for a larger picture area, the first results in an actual decrease in picture area.