A dictionary of photography for the amateur and professional photographer (1889)
Wall, E. J. (Edward John), 1860-1928 · New York : E. & H.T. Anthony · leaf 111
r negative action of the other. It is upon these principles that the whole of the modern lenses are calculated. As soon as it was announced in 1839 Dv Daguerre and Fox Talbot that they had been enabled to obtain a comparatively permanent image in the camera obscura, the ability and skill of… … Fig. 4. Fig. 5. The single lens was replaced by the achromatic combination of the telescope. This was eventually reversed, and the plane side presented to the object, as in fig. 5. Then Wollaston's meniscus (fig. 6) came to be recognised as a means of extending the definition; and in 1840,…
Photography
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