From: Jim Davis <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Friday, January 05, 2001 2:36 PM
Subject: Re: EOS New bag,and other stories - ON Topic
>
>
> > 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???
>
How about knocking the glare off the flora and fauna ? Also good for
removing reflections on pools of water, etc.
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