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.
MOTION PICTURE PHOTOGRAPHY that is less than one hundred dollars, are of the hand driven continuous type, and for short strip work, i.e., fifty feet or less they will give beautiful results. In printing it is well to make test strips a foot or so long, or at least such should be done until you become a proficient judge of film density. This test method will enable you to obtain the best results with a mini- mum loss of film. Film should be printed so that it is completely developed in four minutes at sixty-five degrees. Some laboratory technicians print a two- minute film and others range up to a ten-minute film. I have tried all of them and I have found that a four- minute film gives what I consider the best projection image. However, this will be a matter for individual choice, but until you are sufficiently proficient to ex- periment I should advise the four-minute film. I shall mention here the method employed in the large labora- tories for printing scenes of various density. A man of wide experience in judging film density inspects the film, and marks the relative exposure on a card and clips the edge of the film with a special clip at the end of each scene. The machine is set by dial or pegs in a switchboard to correspond with the density marked and the film run through the machine. As each clip passes the gate, an automatic switch changes the re- sistance of the lighting circuit so that the light intensity is changed to the proper degree. Thus one expert can handle a battery of printers whose actual operation is supervised by girls who need have no technical knowledge. These machines cost from one thousand dollars upward. 164