I put three filters on my G.Zuiko 50 mm f 1.4: Red 25, Blue 47, and a
Green # 58
(which incidentally has a gold coating on one side). I can't see
anything through this
lens combination. I know that it transmits infrared because I tried it
on a night vision
scope (Vivitar) and I can "see" infrared effects (white leaves on trees,
glowing toaster
heating elements, etc.)
I would expect my OM 2S not to make light meter readings through these
three stackedb
filters, yet at f 1.4 (EI 100) in bright sunlight the spot meter reads
over exposure and the
OTF reading was between 1/30th and 1/60th second and the same for
program mode.
addition of UV-HAZE filter dropped the reading about 1/2 stop
addition of a CIRCULAR polarizer dropped the reading about 2/3 stop
with the polarizer it did not matter if the polarizer was on the top of
the stack or the
bottom of the stack closest to the camera. I pointed the camera at blue
sky in the direction of maximum polarization and rotated the polarizer
but there was no effect
on exposure readings.
Rotating the filter stack (including the gold coated green filter)
likwise had no effect
on the exposure. (BTW I am able to see some polarization effects when I
hold the
the gold coated green filter at an angle to the polarizer and the effect
is greater with
a linear polarizer)
Does this mean that the filters transmit Ultraviolet light ?
What kind of color film is most sensitive to UV?
Hank
*- DORIS FANG -* wrote:
> Not only do I see differently color wise with each eye (the left
> eye is warmer), but the truly strange thing is that when speaking
> my 2nd language, I've noticed a shift in my perception of color
> as well.
> *= Doris Fang =*
>
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--
Thomas "Hank" Hogan
Biologist, Photographer, Web Designer, UNIX - user
mailto:flzhgn@xxxxxxxxxxxxx
http://www.netcom.com/~flzhgn/indexc.htm
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