A Double Anastigmat Series III 'DAGOR' Lens.
- Made:
- 1904
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A double anastigmat series III 'DAGOR' lens F.6.8 125MM f.l. in a recessed rigid mount with a ring type iris diaphragm. In 1892 Erich von Hoegh applied for a patent for the Goerz double anastigmat. This was a symmetrical lens developed from the rapid rectilinear by adding a component of the new Jena glass to each half of the R.R lens. The resultant six component lens could be used at apertures of F.6.8 over a field of 70 degrees. After 1904 the Goerz double Anastigmat series III was named the 'Dagor' lens. Ref. Science museum photo. Coll. pge 29.
Details
- Category:
- Photographic Technology
- Collection:
- Arthur Frank Collection
- Object Number:
- 1979-559/1232
- Materials:
- glass and metal (unknown)
- Measurements:
-
overall: 43 mm 56 mm,
- type:
- lens
- credit:
- The Arthur Frank Collection
