Anthony's photographic bulletin for .. . 3§9 The plate-holder is made on the Benster principle, by which thesensitive plate, no matter what size, is brought automatically to theexact center of the holder. Side gauges prevent it getting out ofcenter laterally. The distance between the plate and screen is regu-lated from the outside of the camera by two knobs. Indicators tell theexact separation. The metal portions touched by the wet plate areunacted upon by the wet plate, while there is a bottle in the lower bar tocatch the drippings of nitrate of silver solution. Circulars and prices ofboth ho
Anthony's photographic bulletin for .. . 3§9 The plate-holder is made on the Benster principle, by which thesensitive plate, no matter what size, is brought automatically to theexact center of the holder. Side gauges prevent it getting out ofcenter laterally. The distance between the plate and screen is regu-lated from the outside of the camera by two knobs. Indicators tell theexact separation. The metal portions touched by the wet plate areunacted upon by the wet plate, while there is a bottle in the lower bar tocatch the drippings of nitrate of silver solution. Circulars and prices ofboth holder and printing frame can be had by addressing our pub-lishers. PHOTO-LITHOGRAPHY BY DIRECT TRANSFER. IT is universally admitted that the direct transfer methods have notonly the advantage of lessening labor, but also that the sharpnessand purity of the final result are essentially greater. Nothing provesthis better than the present state of the copper and zinc half-tone pro-cess, when compared with that of former times, when the ind
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectphotogr, bookyear1870
