> I haven't really been following the thread, so this is just a reminder
> that the sky is not evenly polarized, and when you use such a wide angle
> (20mm and wider generally), you have to be very careful because you can
> get a dark band in the sky (where the light is most polarized) and
> lighter edges of the picture which are outside of the polarized area of
> the sky. Obviously, you can see this in the veiwfinder, so if you see a
> sky that is light on the left, dark blue in the middle and light again
> on the right, don't just figure it to be your imagination.
>
> Of course the band of polarization in the sky can be anywhere in the
> frame, depending where you are pointed in relation to the sun (the sky
> is most polarized at 90 degrees from the location of the sun).
>
> Mike
It sounds to me then, that a polarizer for a 20mm lens would be a real waste
of money, since I can't control the angle I'm shooting at, only rarely would
the polarizer be effective???
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