Guy Klose wrote:
> > axis the effect is most pronounced. With ultra w/a lenses, the angle of
> > coverage is so great that the amount of polarization across the sky will
> > vary noticeably from one side of the image to the other.
>
> Please forgive my ignorance, but is this why photographers like Galen
> Rowell tout GND filters?
No. Graduated ND filters are used to control the brightness of a scene when the
range between the dark and light areas exceeds the contrast capacity of the film.
The effect seen when using a polarizer with a wide-angle lens will remain even if
you add a graduated neutral-density filter. The effect of "uneven" polarization
is not something you can see with your naked eye, but only through a polarizing
filter.
fcc
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