. The book of photography; practical, theoretical and applied. Fis;. lis.—A TYricAL Everset Automatic Shcttek. be given. A more elaborate applicationof the flap principle with pneumatic action,suitable for studio work, is shown byFig. 117. The Everset of the shutters previously men-tioned require to be set, or the mechanism 56 THE BOOK OF PHOTOGRAPHY. adjusted, before being ready for is, however, a kind of shutter whichis always ready for use, known as the everset. There are a large number ofmakes, some comparatively simple in ar-rangement, others greatly complicatedand
. The book of photography; practical, theoretical and applied. Fis;. lis.—A TYricAL Everset Automatic Shcttek. be given. A more elaborate applicationof the flap principle with pneumatic action,suitable for studio work, is shown byFig. 117. The Everset of the shutters previously men-tioned require to be set, or the mechanism 56 THE BOOK OF PHOTOGRAPHY. adjusted, before being ready for is, however, a kind of shutter whichis always ready for use, known as the everset. There are a large number ofmakes, some comparatively simple in ar-rangement, others greatly complicatedand ingenious. Fig. 116 is a typical ex-ample of a high-class modern automaticshutter, which is always ready for actionand adjustable to almost any desiredspeed. It is possible, of course, to over-estimate the value of having the shvitterever set. After all, it is only a slightadditional convenience. There are many type which seems to find especial favouramong professionals is that known as thebellows shutter, which is fixed inside the. Fi2. 119.—Speci.\l Shutter for Stereoscopic Work. admirable designs of shutters requiringpreliminary setting which are, neverthe-less, in every way satisfactory. Stereoscopic explained Avhen dealing with stereo-scopic cameras, the shutters for this ap-paratus must be double, and simultaneousin action. As this simply means, in mostcases, the duplication of the mechanism,further explanation is imneccssary. Adouble roller-blind sliutter is shown on thecamera front in Fig. 75, p. 44, while in another pattern of double shutter isillustrated in position. A special shutterfor stereoscopic work, of the Bausch andLomb pattern, is shown by Fig. 119. Studio Shutters. Any form of shutter may be used forstudio work, if of sufficient size ; but the
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphotography, bookyear
