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must be able to see the track, not only to determine the speed of the horses, but to be able to start the camera at the right time, there must be windows. But these windows are glazed with red glass — about the same shade as a 23-A filter — which gives plenty of light to work by, yet is thoroughly safe for the printing paper used.
Naturally, with Del Riccio’s cineengineering experience, he has incorporated the most approved methods of solution control in the “laboratory” section of his machine. A circulating system draws solution from the top of each tank, whence it is piped down through filters to pumps which raise it to a temperature-conditioned reserve tank. From this it feeds by gravity to inlets at the bottom of each solution-tank, rising again to the overflow drain. In this way sufficient gentle turbulation is obtained to avoid directional markings on the negative, while the purity and temperature of the solutions are properly controlled.
But as inventor Del Riccio points out, it is not the ingenious mechanical construction of this camera which makes it unique, but a superior accuracy which has never been approached by any instrument of conventional design. “The Photo-Chart,” Del Riccio will tell you, “is unique in that it is never ‘blind.’ Any conventional camera must inevitably have its intervals of blindness.
“To put it in easily understood terms, if you try to photograph any fast-moving action like a race finish with a still camera, you must rely on an almost incredible combination of skill and luck if you are to make your exposure at the precisely correct split
second when, in this case, the first horse actually touches the finish-line with the tip of his nose. This timing is vitally necessary, for it is entirely possible that another horse, closing fast, might nose past him the barest fraction of an instant later.
“Much the same thing happens if you use a conventional motion picture camera, no matter how fast the frameexposures follow each other. There is a dominant probability that at the true instant of finishing the camera's shutter might be closed, leaving the camera ‘blind.’ In a really close finish this would give you one frame taken a split-second before either horse reached the finish, and the next a splitsecond after one or both had crossed the line. You might easily have one horse ahead in the first frame and the other ahead in the second. It would be impossible to tell from the pictures which finished first: you
would be forced to rule a dead heat.
“The Photo-Chart camera, on the other hand, ‘has its eyes open’ all the time. It photographs each horse at the precise split second each part of the animal crosses the line. Or, to put it differently, the Photo-Chart camera cannot photograph any part of a horse except at the exact instant that part of the animal begins to cross the line.
“In general, the Photo-Chart system makes it very difficult for the picture to show a dead heat unless the horses finish together, not only absolutely beside each other, neck-and-neck and shoulder-to-shoulder, but as perfectly in step as a pair of West Point cadets on dress parade.
“Occasionally, one horse will blanket another from the lens, so that it
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