On 26 Jul 2002 16:36:13 -0700, jchapman11@cox.net (john chapman) wrote:

>You might be right in general, but I frequently use a polarizer on my
>nikon 17-35 and have not noticed the problem you describe.

Wow! Even on a 28mm (even for vertical framing), the
shift in polarization in a blue sky is unacceptable - and
with only slightly wider lenses, shifts in polarization are
obvious even in foliage. I never use polarizers for still
work, preferring to use the lighting and film selection
to control color, though I often use them for video
where the color shifts look less unacceptably unnatural
(or, more interestingly weird...;-).