Aids to drawing: The field camera Sketching
Aids to drawing: The field camera Sketching with the aid of a portable tent-type camera obscura. Behind the lens mounted on top of the tent is a mirror angled at 45 degrees. The image collected by the lens was reflected in the mirror and projected down on to a sheet of white paper. Engraving from The Science Record (New York, 1874)
Picture No
13902653
Media ID
48376537
Size
6000px x 5796px
(4.3MB)
Credit
World History Archive / Mary Evans Picture Library
Source
World History Archive





























