Snelling, Henry Hunt, 1816-1897 · [New York : W.B. Smith] · leaf 14
positive photographs. Thefrontispiece to this volume represents sucha negative image, and the positive im-pression resulting from it. The mode ofeffecting this is, having, by fixing, givenpermanence to the negative picture, it isplaced, face down, on another piece of sen-sitive paper, when all the… … in its lights and shadows, and also as it re-gards right and left. For the multiplication of photographicdrawings, it is necessary to be providedwith a frame and glass, the most conve-nient size for which is something largerthan a single leaf of quarto post writingpaper. The glass must be of such…
Photography · Art and photography
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