Linear or circular?

Bill



At 01:21 16/11/2004, Bill Keicher wrote:
>Polarizers are used in outdoor photography to increase color
>saturation. Polarizers can make the clear sky look deep blue by reducing
>scattered light that is polarized. The magnitude of this effect depends
>on the relative positions of the sun, the observer and the object observed.
>
>Has anyone used this technique to reduce the sky background level caused
>by scattered moon light or localized city light? Even though a polarizer
>would reduce the light from an unpolarized source by at least half, It
>seems like using a polarizer would improve image contrast under certain
>otherwise unfavorable conditions. Seems like it would be worth trying.
>
>Clear skies!
>
>Bill Keicher
>

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