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210 Transactions of S.M.P,E., May 1924
step to be taken only when the tremendous possibiHties of the panoramic principle will have been fully developed.
As I said before, the good features of the panoramic camera are not limited to the possibility of taking pictures of wide scenes from a short distance, but extend to the far greater possibilities inherent in the intrinsic qualities of the panoramic picture.
B"D"C"A" Fig. 3
Let us consider figure 3, in which A-B and C-D are two segments representing one dimension of two objects placed at the same distance from ''O" and 'T". ^^O" is the station where we place a panoramic camera including, for instance, an angle of 65 degrees, 'T" is the station at which we have to place an ordinary camera, having the same objective, if we want to see both C-D and A-B. The images on the two negatives will be A'-B^ C'-D' and A"-B",C"-D". It is easy to convince ourselves that the two couples of images are proportional, that is they are a reproduction of A-B, C-D in different scales. The only advantage of the panoramic picture is that it is in a larger scale.
But let us now consider figure 4, in which the object of which C-D represents one dimension is placed closer to "0" and 'T" than A-B. The images in this second case are no more proportional, as is apparent at a glance. In fact C'-D' is a larger fraction of A'-B' than G^'-D'' is of A''-B''. In other words by using a panoramic camera we get a picture in which the objects closer to the camera are shown in much larger proportions to those further removed