Hunt, Robert, 1807-1887, author, Contained in (work): Hunt, Robert, 1807-1887. Manual of photography · London ; Glasgow : Richard Griffin and Company · leaf 23
phical toy, and extremely useful to tbe artist, is by no means fitted for photographic purposes. The radiations from external objects always suffer considerable di- minution of chemical /, power in penetrating the lens, and the re- flection from the mir- ror and transmission through the glass table… … Fig. 20. Fig 21. It is conceived, therefore, that a few examples of portable and convenient cameras will not be out of place. Fig. 20 represents one box sliding within the other for the purpose of adjusting the focal distances, the lens being fitted into a brass tube, which screws into the front of…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
