Marion and Co., author · London W. : Marion and Co., 22 and 23 Soho Square · leaf 186
174 PRACTICAL GUIDE TO PHOTOGRAPHY the pasteboard. Now it is evident that if there be not plenty of light striking the frame obliquely no rays will … pass beyond the edge of the aperture in the j^asteboard. It is therefore necessary if, as sometimes happens, espe: cially in a town, a light from only a narrow portion of the sky can be obtained, to use tissue paper over the opening even when we are printing by diffused light. The effect of the…
Photography -- Handbooks, manuals, etc
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
