Practical guide to photographic & photo-mechanical printing (1887)
Burton, W. K. (William Kinnimond) · London, Marion and co. · leaf 176
SILVER PRINTING 156 negative to be enlarged from E is a board for holding the focussing paper, and afterwards the sensitive film. It is adjustable along the board D. F is a screen covered with white paper, and adjusted at an angle of about 45°, with a horizontal or perpendicular line. Its function… … window looks to the north, it is possible, by sloping the board D, so that the camera has the sky behind it, to dispense with the board F. In working the arrangement, a rough adjustment for size of enlargement is made with the board E, and the final sharp focussing is performed by racking the front…
Photography · Photomechanical processes
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
