Re: [APML]: "Special" Lenses

[Christopher Go <rigel@mozcom.com>]

These special lenses use ED glass.  I just got one and they are fantastic!!
One would be better off buying a used one rather than a brand new one.

Chris


At 11:25 AM 10/15/96 -0400, you wrote:
>
>>      I have heard about "special lenses" which were designed for sports 
>>  photography but work well with astrophotography. I believe the Cannon 
>>  300mm f2.8 is one of these lenses. What is so "special" about them and 
>>  why is that important? What are other "special lenses"? Thanks
>> Patty
>> Rochester, NY USA
>> Patricia_Kocinski@wb.xerox.com
>
>They are unusually fast for their focal length (most 300mm lenses are
>f/4 or f/5.6).  They are also unusually expensive (like $3,000).
>
>
>-- 
>Michael A. Covington                http://www.ai.uga.edu/faculty/covington/
>Artificial Intelligence Center                                           <><
>The University of Georgia               Unless otherwise indicated, I am not
>Athens, GA 30602-7415 U.S.A.         speaking officially for the University.
>