Zeiss Patent Combination Lens
- Made:
- c.1910 in London
- maker:
- Ross and Company
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Carl Zeiss patent combination lens with a ring type iris diaphragm. When used as a doublet the effective aperture is 5.4.5. with a 7 inch f.1, when the front element is used alone the effective aperture is F.12.5 11 1/2 inch f.1.
Details
- Category:
- Photographic Technology
- Collection:
- Arthur Frank Collection
- Object Number:
- 1979-559/1503
- Measurements:
-
overall: 39 mm 49 mm,
- type:
- lens
- credit:
- The Arthur Frank Collection
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