Plain directions for obtaining photographic pictures by the calotype, energiatype, and other processes on paper, including the chrysotype, cyanotype, chromotype, etc., etc, with all the latest improvements (1845)
Croucher, J. H. (John H.) · London : T & R. Willats, opticians, 98, Cheapside : and Sherwood, Gilbert, & Piper, Paternoster-Row, and all booksellers · leaf 9
7 The secoud frame (Fig. 4) consists of a box (6), whicli, when the camera is applied to processes on paper^ is made to receive … Fig. 3. Fig. 4. a piece of slate, iron, or glass, which is held tight by a spring at the back : this frame is furnished with a sliding door (c), laying over the top of the camera when raised. A picture four-inches square may be taken in this camera. The lens is usually 1| inch in diameter, and from…
Photography · Photography -- Developing and developers
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
