Bromide enlarging and contact printing : how to do it (1892)
Dresser, A. R · London : Fry Manufacturing Co. · leaf 45
given lens can be ascertained, or supposing there is a short limit to the extension of his apparatus, he will be able to compute the focal length of lens necessary, if the work must be done with the camera he already has. I have indicated one method by which the ordinary apparatus can be used for… … Another make-shift arrangement. another illustration, showing an alternative method without the use of special apparatus, as a suggestion to the reader.
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
