In article <33E61796.41C6@mit.edu>, cai@mit.edu says...
>Neuman - Ruether wrote:

>> Hoya is sufficiently high-quality, and generally reasonably-priced
>> (spending more gives little return...).

>But, Hoya's circular polarizer has a blue tint!
>Liang-Wu Cai

Depends - some of the most neutral polarizers I've found were
Hoyas - but even Nikkors vary a bit in color.... (some Nikkor
polarizers show slight color, most others show more - but all
show sample-to-sample color differences...).
Hope This Helps
(David Ruether - http://www.fcinet.com/ruether )