From accession form: Brass com

1860 in England

From accession form: Brass combination lens. A front lens, a case with two supplementary lenses, a rear barrel with rack focusing and a rear lens. The supplementary in a small case. All brass mounted. This lens is a large portrait lens of the Petzval type. The front lens can be used as a single landscape lens of long focus. With the rear lens added to the set becomes a portrait lens. With the addition of either one or two of the supplementary lenses three long focus landscape lenses and three medium focus portrait lenses six focal length's in all. From 14 1/2" to 32". The interesting point about the constructing is the early use of bayonet fitting for the supplementary lenses. Science Museum Catalogue No 190.


Photographic Technology
Object Number:
camera lens
Gift of J.T. Chapman Limited

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