Word: parallaxes
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Dates: during 1930-1939
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...Ives has worked out the problems of another method, which requires no special glasses or effort for the observer. He calls it "parallax panoramagram." An object is photographed from many points of view through a grating. The grating deflects and breaks up the image on the negative. The positive print is a blur unless viewed through a grating the duplicate of the camera's. Still pictures made and scanned this way are brilliantly realistic...
...picture. Projection lenses must be of "extraordinary defining power." The films must run through the projectors with microscopic precision. Finally, if all the mechanical requirements are accomplished, there remains one more obstacle. No photographic chemicals are yet known which will register pictures as swiftly as Dr. Ives's parallax panoramagram method requires...