. Photographic pastimes : a series of interesting experiments for amateurs for obtaining novel and curious effects with the aid of the camera. Fig. 48.—The Watch Camera. ^^The watch (fig 48), when closed,is exactly like an ordinary watch, and is K 138 PHOTOGRAPHIC PASTIMES. opened in an instant by pressing a exposure is, of course, an instan-taneous one, worked by a spring. Finally, the ^Miat camera (fig. 49),in the form in which it is here illustrated,has been constructed by Mr. LeonDumuys. The frame inside the hat. Figs. 49 and 50.—The Hat Camera. takes a plate of ground glass, wh
. Photographic pastimes : a series of interesting experiments for amateurs for obtaining novel and curious effects with the aid of the camera. Fig. 48.—The Watch Camera. ^^The watch (fig 48), when closed,is exactly like an ordinary watch, and is K 138 PHOTOGRAPHIC PASTIMES. opened in an instant by pressing a exposure is, of course, an instan-taneous one, worked by a spring. Finally, the ^Miat camera (fig. 49),in the form in which it is here illustrated,has been constructed by Mr. LeonDumuys. The frame inside the hat. Figs. 49 and 50.—The Hat Camera. takes a plate of ground glass, whichserves as a focussing screen, and themaker recommends a kind of portfolioslide containing sensitive films. Theobjective projects through the centre ofthe cover of the hat, and, if not in use, THE HAT CAMERA. this opening is shut by a conical walking-stick, to which two thiniron rods are attached, serves as a tripodstand. If an instantaneous shutter isrequired, this may be made oi the formshown in fig. 49, No. i, which can bereadily carried in the pocket of thecoat. (36.) CHAPTER IV. PHOTOGRAPHIC-OPTICALENTERTAINMENTS. CHAPTER IV. STROBOSCOPIC PICTURES. The well-known Stroboscopic disc,invented in 1832 by Stamfer, consistssimply of a pasteboard disc of about 20to 30 centimetres in diameter, which isseparated by a circle into an inner discof about 15 to 25 centimetres in diameter,and an outer ring 5 centimetres the inner disc are described 8 to 12figures close to the periphery, at equaldistances
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Keywords: ., bo, bookcentury1800, bookdecade1890, bookidphotographicpast00schn
