This link may be worth perusing..
http://ao.osa.org/upcoming_pdf.cfm?id=66926
http://ao.osa.org/upcoming_pdf.cfm?id=66926
Most Interesting (with Romans permission).
Started by jer, 03/18/2006 12:02AM
Posted 03/18/2006 12:02AM
Opening Post
Posted 03/18/2006 01:51AM
| Edited 03/18/2006 01:53AM
#1
jon roewer said:
This link may be worth perusing..
http://ao.osa.org/upcoming_pdf.cfm?id=66926
So we get a 70mm f/7 with five elements, large airspaces, and a total length of 1000mm - more than twice the effective focal length. Or am I missing something?
A tolerance analysis would be interesting and useful.
(A 70mm f/14 achromat should be nice and color free visually.)
Clear skies, Alan
Funding Member
