In a message dated 98-02-14 13:10:11 EST, [EMAIL PROTECTED] writes:
> I've found the polarizer to be an excellent tool when doing aerial
photography
> to give an extra sharpness to detail.
>
>
Technically, the polarizer cannot add sharpness, as it introduces another
layer of glass or plastic between the film and the subject. But it does allow
you to remove the haze by adjusting the reflection off the water vapor in the
air. I have found in arial photography that by removing the water vapor and
haze, the true color of the shit particles in smog come through loud and
clear. You guys in L.A. might have a different colored smog. But I recall
one 'copter job where I waited for a zero-degree clear winter day (for the
Susquehanna Railroad) so that there was no haze to begin with; the stuff near
the City had the brown cloud on the polarized stuff, and less brown on the
non-polarized stuff. Some of both made it into the brochure, so I guess I was
more sensitive to it than the Susquehanna.
Always remember that a polarizer allows you to CONTROL REFLECTIONS. Bluer
skies are but one of the effects, if you desire that. But it's capable of so
much more, and it is an excellent tool.
....Mike
-> SPORRS: Serious Photographers of Railroad Related Subjects
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