Claudet's Focus-Equaliser lens

Made:
1867

Claudet's Focus-Equaliser lens. Designed by Dr. Sommer, stepson of Voigtlander, mechanism invented by Claudet. Petzval type portrait attachment lens, F:25cm. Cam and screw mechanism allows lens components to be separated during exposure. Rack and pinion focusing; to compensate for shallow depth of field of the Petzval lens.

Details

Category:
Photographic Technology
Object Number:
1990-5036/684
type:
lens
credit:
The Kodak Collection at the National Media Museum, Bradford
status:
Permanent collection

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