Archived posting to the Leica Users Group, 1999/01/27
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]I've a strange lens, a Rodenstock XR-Heligon 50mm f/0.75 which is in a barrel mount. It too has a very short back focus, about 1/4". I believe it is used in electronic wafer fabrication, and doubtless used at non-infinate image conjugates. Anyone have any experience with this sort of lens? -Jay- Visit my website at: <http://www.dakotacom.net/~jaleblan/index.html>