Photographic optics : including the description of lenses and enlarging apparatus
Monckhoven's 1867 London treatise on photographic optics, written for photographers and opticians, sets out how lenses and enlarging apparatus work. Its pictures are plain line diagrams: a lens cross-section with labelled elements and ray paths, and a plate of technical fittings and framed structures drawn in flat elevation and section, useful to a designer wanting clear schematic linework and labelled figure layouts.

