The Film Size: It is possible but impracticable to retouch a negative smaller than 4 x 5, you know, so that should be the film size which you adopt. Not only is 4 x 5 the smallest size you should use, but all things considered, it is probably by far the best size. It has advantages over 5x7 and 8 x 10 in that the film is cheaper and easier to handle; it can be enlarged with equipment in the ordinary price range, and 4x5 cameras are much more convenient to handle than the larger sizes.
This is neither so difficult to arrange nor to accomplish as you might think, provided you have the proper equipment. This should be, to make it pay a profit for the time involved, one of the automatic cameras which will shoot several hundred pictures on one roll of film, and the Camera should be synchronized with electronic flash. These cameras are available for either 35mm or 70mm firm. The larger size is to be preferred since film cost is only slightly more and contact prints in the larger size are much more readily salable.
Late in 1967, space research scientists announced the development of a technique that might lead to a considerable reduction in the size of computers. By using a highly focused beam of intense light (a laser) the researchers believe that as much information can be stored on 1 sq in. (6 sq cm) of magnetic film as is now contained in a 10-cu ft (0.28-cu m) computer memory unit. The laser beam, focused through a microscope onto the magnetic film, is reduced to the size of a pinpoint.
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Photography
