. The book of photography; practical, theoretical and applied. versingFrame Edge. 4j in., and across it at v screw rails, sec-tions of w^hich are shown in Fig. 84. Thefocussing frame scarcely needs descrip-tion ; it fits between the rails v (Fig. 83),and carries a sheet of ground glass 6^ 4f in. rough side inwards. Small turn-buttons at w (Fig. 82) serve to hold inposition the reversing frame. Brass CAMERAS AND ACCESSORIES. 47 clamps as in Fig. 85 should be attachedto the edge of the baseboard, and screwsz z to take the clamps. Remove the ex-tension frame and screw on the racks B(Fig. 79
. The book of photography; practical, theoretical and applied. versingFrame Edge. 4j in., and across it at v screw rails, sec-tions of w^hich are shown in Fig. 84. Thefocussing frame scarcely needs descrip-tion ; it fits between the rails v (Fig. 83),and carries a sheet of ground glass 6^ 4f in. rough side inwards. Small turn-buttons at w (Fig. 82) serve to hold inposition the reversing frame. Brass CAMERAS AND ACCESSORIES. 47 clamps as in Fig. 85 should be attachedto the edge of the baseboard, and screwsz z to take the clamps. Remove the ex-tension frame and screw on the racks B(Fig. 79), and fix in a pinion, not shownin the illustration, of the usual shape,having a brass milled head. The Division or Partition. For the collapsible division, which nextmust be fitted, a strip of black twill mustbe cut 6 in. by 18 in. ; run a hem alongeither side of the longer edges, and throughthis thiead some flat elastic. Pleat the twill,and stitch it to the elastic at distancesof about i in. The elastic band must benot more than the focus of the lens, say. Fig. S5.—Stereoscopic Camera with FramesClosed. 8 in., in length. A loop is left at each endfor attachment to the camera front andto the back bellows frame, and the divisionaccommodates itself to any extension ofthe camera. When the camera is requiredfor oidinary work the division is easilyremoved. Wet-plate and Ferrotype Cameras. Specially made cameras for wet-platework are now seldom seen. The old formconsisted simply of two boxes, one slidingin the other, and a somewhat primitivedark-slide, inserted through an openingor slit in the top of the camera. Any or-dinary outfit may be used by those whodesire to undertake wet-plate work, theonly exception being that a slightly differ- ent form of slide is required, having a shal-low trough at the bottom to catch the drip-pings of the plates, and silver wires to sup-port them. It is essential that the slidesshould be of the single or studio descrip-tion ; the book-form slide c
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectphotography, bookyear
