Alfred H. Saunders

“ But until we get perfection with machinery, that gives absolute correctness in the perforating of the film, a camera which is made to take such film, and the same mechanism, all made from the perfect model, with a shutter adjusted to the requirements of the picture, we shall have to put up with the flicker, or reduce it to a minimum, using the material we have at hand. It is surprising what individual operators use for the shutter, each swearing by his own idea, as though it were of any consequence what material is used so that it is opaque. ”

“ For over 30 feet—to, say, 65 or 70 feet—it is advisable to use a white transparent gelatine shutter, and for all distance beyond 70 feet good results are obtained without any shutter, although it is advisable to separate the distance from the screen more than 85 feet, as too much light is lost even with the most powerful jets on the market. ”