Mees, C. E. Kenneth (Charles Edward Kenneth), 1882-1960, Eastman Kodak Company · Rochester, N.Y. : Eastman Kodak Company · leaf 113
ORTHOCHROMATIC PHOTOGRAPHY … b Fig. 111. Made without a filter. Made with a Wratten G filter. In this filter only half the gelatine, which is cemented between the glasses, is stained with the yellow dye, the other half being clear, and the filter is placed on the lens with its stained half on top so that the light from the sky…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from St. Nicholas [serial] (1873)](https://img.insideoutlibrary.com/img/200/ia-stnicholasserial371dodg-62-48.webp)
