This article is a stub. You can help Camera-wiki.org by expanding it.
|scanned by Nesster (Image rights)|
The Holostigmat is a double anastigmat made by Watson from about 1901 until the 1930s. Early Photography states that it was designed by Alexander Conrady, and that it exists as single lenses and as combinable lens sets.
- ↑ Double anastigmats including the Holostigmat, at Early Photography.