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THREE-DIMENSIONAL MOTION PICTURES 27 in all probability, be in a limited number of large theaters, situated in the larger cities throughout the country* Another type of picture is that proposed by Fox and to be placed on the market under the name of CINEMASCOPE. This is not a third dimension system, but an expanded screen type. The system calls for the use of a change in the standard screen ratio of 3 to 4, to one of about 2*/4 to 1, or maybe two and one-half to one. Calling for a screen between 50 and 60 feet wide. The wide picture is obtained from a single film, thrown on the screen by a single projector. The extra width is obtained by compressing the photographic image in making the picture, and then expanding this image, in projection. The system calls for the installation of special expansion lens to be placed in the optical circuit of the projectors. These will be special made lenses and the cost will be relatively high. The equipment necessary for the showing of this type picture, will include,, the special lenses, one for each projector, a special extra wide reflective screen, and the installation of a multiple speaker system, with speakers scattered throughout the auditorium as well as across the wide screen. In some of the publicity released by Fox the cost to exhibitors has been given as $2,500.00. To the writer this seems far too low, and probably by the time this book reaches the reader, a new figure will be made public. While only one projector will be run at a time, two projection ists will be necessary, one to run the projector the other for control of stereophonic sound. The extra wide screen picture, will also call for a higher arclamp amperage, which may require replacement of present equipment or the addition of new electrical equipment.