I noticed some years ago that if a pair of polarized sunglasses and a
linear polarized filter were turned the right way, the light got very
dark and everything had a "black light" effect or glow to it. Haven't
tried this with a circular polarizer. Does a polarizer not affect the
ultraviolet wavelengths?
I recently borrowed a video Series from the library called Creative
Outdoor Photography w/ Frans Lanting and Galen Rowell. In it is
demonstrated a theory of color photography proposed by Edward Land in
1959 called the Retinex Theory of Color Vision.
He photographed the same shot with b&w film using two different filters
(I don't know which) then printed each resulting negative onto one sheet
of color paper (using a red filter with one of the negatives. (Again, I
don't know which neg.) The result was a full spectrum photo.
The point, in the video, was that our eye sees differently than film
*sees* light. This should certainly be considered when viewing through
a viewfinder while using a polarizing filter. I'm just not sure of how
much and which way!
Gregg
HI100@xxxxxxx wrote:
>
(snip)
It would be interesting to know if this
> has some biological advantage or whether it is a chance effect. Since a
> normal print (even from a Zuiko) does not maintain polarization in the
> picture, is this something that subtly affects our perception of real life.
> When you use a polarizer on distant mountains you often get very significant
> color shifts from light reflected off the rocky surfaces so in a simple way
> that is true but maybe we percieve more subtle differences from polarization?
>
> Tim Hughes
> Hi100@xxxxxxx
>
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