Steinheil Portrait Antiplanet (Serie I, Portrait Antiplanete)

Steinheil Antiplanet Lens patented in Germany (patent Nr. D.R.P. 16354), England and USA.

By multiplying Steinheil Lin 2.3x times, you get an approximate opening in mm (e.g Steinheil 7 Lin x2.3 you get an opening of approx 16-17mm). There is no way to calculate focal length or coverage of the lens by dividing or multiplying “lines”. This needs to be checked from the catalog.

Steinheil Portrait Antiplanet (Serie I, Portrait Antiplanete)
Steinheil Portrait Antiplanet (Serie I, Portrait Antiplanete), 1890.
Steinheil Gruppen Antiplanet (serie II, Gruppen Antiplanete)
Steinheil Portrait Antiplanet (Serie I, Portrait Antiplanete), 1890.