Plain directions for obtaining photographic pictures : upon waxed and albumenised paper and glass, by collodion and albumen : including a third edition of Le Gray's Treatise on photography, a description of the stereoscope and the manner of taking pictures suited for it : also, the process for copying microscopic objects, &c. (1852)
Heisch, Charles, Le Gray, Gustave, 1820-1882 · London : T. Willats · leaf 80
78 Fig. 6. £ ^• * Willats' Improved Camera with double Achromatic combina- tion lenses, to take pictures 4 by 3, adapted for por- traits, with screw adjustment « . fig- 6. 6 0 0 … Fig. 7. * Willats' Improved Camera, with single achromatic lens and revolving diaphragm to take pictures 4 by 3, 3J by 2f , and 2i by 2 in. . • . fig. 7 3 10 0 Cundell's Camera with double combination of miniscus lenses, to take a picture, 7J by 6J in., as described in the Philosophical Magazine" .…
Photography
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