Hunt, Robert, 1807-1887, author, Contained in (work): Hunt, Robert, 1807-1887. Manual of photography · London ; Glasgow : Richard Griffin and Company · leaf 19
red are protected from change, the resulting picture being white upon a dark ground. It should be here stated, once for all, that such pictures, how- soever obtained, are called negative photographs ; and those which have their lights and shadows correct as in nature- — dark upon a light ground ,… … If a photograph of any illuminated object is obtained by means of the camera obscura, the picture being produced by the darken-
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
