Claudet's Focus-Equaliser lens. Designed by Dr. Sommer
- PART OF:
- The Kodak Museum Collection
- 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
- Collection:
- Kodak Collection
- Object Number:
- 1990-5036/684
- type:
- lens
- credit:
- The Kodak Collection at the National Media Museum, Bradford