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cases less, than if the picture had been made in the older methods.

CinemaScope pictures provide a presentation which stimulates the wide angle experience of human vision and because of this most scenes can be staged with fewer cuts and camera angles than were formerly necessary. This, is a big economic saving because the additional angles required by the older technique were time-consuming and as a result, costly to make.

Another misconception is that the size of the sets must be larger. Perhaps I can point out why, with CinemaScope pictures they usually call for less construction and to do this I had better start at the beginning and explain how the CinemaScope optical units work.

As we all know by now, the Bausch & Lomb CinemaScope attachment lens itself is an optical unit that fits in front of any ordinary motion picture lens. (See Figure 1.) It follows that it can be used with any 35mm camera and with many of the lenses that are normally used with that camera. What the CinemaScope attachment actually does is to take in an angle of vision, horizontally, two times that which the photographic lens does without the attachment - the vertical angle of view is not changed. The picture seen by the lens combination is photographed in the camera through the aperture shown in Figure 2. When this attachment is used, for example, on a 50mm lens, the height of view remains the same but the width of view is similar to that obtained had a 25mm lens been used. The combination of the CinemaScope attachment on the camera, the camera aperture, the projector CinemaScope attachment and the projector aperture (shown in Figure 3) results in a picture on the screen which is approximately 2 1/2 times as wide as it is high. These same proportions follow with any of the other photographic lenses. Although the principle is the same, our newer lenses combine the functions of the conventional camera lens and the

Fig 1.
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