In article , rmounce@us.net says...
>In article <4jd7eo$o6v@epx.cis.umn.edu> ngxx0027@gold.tc.umn.edu (Andrew Y.
>Ng) writes:

>>Oh, Come on!! U use a Hoya on the $1600 70-200L?? Does not make any
>>sense to me at all. Get a canon!! :)

>The Canon filter is made by Tiffen.

If so, I would definitely prefer a Hoya, which is cheap around
here, and Hoya's are uniformly excellent, in my experience (and
I use one on my 80-200mm f2.8 Nikkor...... ;-).
Hope This Helps