Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 273
en thereis time to spare. After having placed thecamera in front of the landscape, or any * This is contrary to the experience of the authorof this volume; and Dr. Draper, of New York,states that he has lound the plates improve by keep-ing a tew hours before they are used ; and M.Claudet states,… … 37that a neat and shaply defined picture isproduced. This is, of course, done by theobscured glass. The adjustment beingsatisfactorily made, the glass is removed,and its place supplied by the frame contain-ing the prepared plate, and the wholesecured by the screws. The doors are nowopened by means…
Photography · Art and photography
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![An illustration from [Graphophone patents] (1878)](https://img.insideoutlibrary.com/img/200/ia-graphophonepaten20unit-931-417.webp)
