| milt |
| (professor emeritus) |
| 07/01/09 09:03 PM |
Re: ED glass in binoculars
|
Quote:
From the notes of a world renowned lens designer....Roland Christen
Ed, nice summary. For those who want to read more from Roland I found this very helpful:
http://geogdata.csun.edu/~voltaire/roland/ed.html