On Sun, 03 Nov 2002 11:06:51 GMT, "Joseph Meehan" wrote:
>Joseph Kewfi wrote:
>> Ok, so if a Skylight 1B " is a UV filtering filter that also filters a
>> little visible blue light."
>> is there any point to owning both a Skylight 1B and a UV filter in
>> the same sizes?
>> Is it a matter primarily of taste rather than technical necessity why
>> some photographers prefer a UV filter which does no warming effect to
>> a Skylight seeing as they both filter only a little UV anyhow ?

> Yes. There are times that you may want that additional warming.
>Sometimes it may be a situation where UV is not even an issue.

This is generally the case, since complex lenses block most
UV that can affect film...

>Also many
>times when UV is an issue, for example taking a photo on a day with lots of
>blue sky, but the subject is in the shade, the results will generally show
>up cool even with a UV filter because of all the visible blue light of the
>sky.

I think it is BECAUSE of the blue in the sky, not the
effects of UV, that the shadows are blue; the
"neutral-color" direct sunlight is blocked, and the
illumination is from the blue sky... BTW, it is
interesting to take comparison photographs with and
without the most neutral-colored UV filter you can find
(placing filters on a white surface increases the
visibility of their colors...). So far, I have been
unable to show any affect, good or bad, from using, or
not using, a good neutral-color single-coated UV
filter under most conditions (the only exception:
shooting into the sun, with the sun centered in the
image). Generally, the UV filter provides lens surface
protection only; the skylight adds a slight color
shift toward red or orange, and reduces exposure
slightly...

> The difference is not great and many people will not notice the
>difference, but most experience photographers will notice it and many other
>people "experience" it even if they don't notice it. That is they
>experience the feel of the cool colors and that becomes part of their
>experience with the picture even if they don't consciously recognize that it
>is cool they will feel the "mood" of the image.