Magic; stage illusions and scientific diversions, including trick photography (1897)
Hopkins, Albert A. (Albert Allis), 1869-1939, Evans, Henry Ridgely, b. 1861 · London : Low · leaf 525
operation. It will be seenthat the camera is very portable. The same camera can be converted into aprojecting apparatus for throwing moving pictures upon the screen. Theimages are about an inch square. CAMERA FOR RIBBON PHOTOGRAPHY. The camera for ribbon photography which we illustrate is the… … THE PROJECTION OF 3tOVlNG PICTURES. 511 fixed leus, this camera has a single opening in the front, tlie size of tlie aper-ture being regulated at its rear end by a diaphragm disk having radial slotsof varying widths cut therein. Tlie oi)erator is thereby enabled to governthe amount of light…
Magic tricks
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