French Landscape Lens HERMAGIS Opt.en Breveté s.g.d.g. Paris
12,3x14,2 cm.
12,3x14,2 cm.
Convertible Lens 1868 N°13657 HERMAGIS Opt.en Fab.t Breveté s.g.d.g. Paris
27x11,5 cm. F= 28,8 cm.
A short excerpt from "Hermagis" pag 181 : The cap on the shutter of this lens imitates the shape used by Derogy in the Objectif à foyers multiples et lentilles addictionelles. He used the shutter cap in such a way, that when one wanted to use the landscape lens, the front part of the cap could be unscrewed and screwed instead on the front part of the landscape lens...(continue)
27x11,5 cm. F= 28,8 cm.
A short excerpt from "Hermagis" pag 181 : The cap on the shutter of this lens imitates the shape used by Derogy in the Objectif à foyers multiples et lentilles addictionelles. He used the shutter cap in such a way, that when one wanted to use the landscape lens, the front part of the cap could be unscrewed and screwed instead on the front part of the landscape lens...(continue)
A short excerpt from pag 189: .....This telephoto model, shorter than the models that came before it, is mounted on a photographic objective with a Petzval design. The lenses, with a rear diameter of 4.15 cm and a front diameter of 5.3 cm., allow for an aperture of f/2.37. Fabre mentions a Harmagis teletube model in 1897 (26) for the 9x12 format. This teletube, with a center of gravity that coincided with the point of attachment and a 24 cm. draught, did not force the screws which held the lens together…above, an advertisement from 1910 with the prices of the telephoto lens....(continue)
