Re: 18A UV pass filter for studio strobe lights

[Andrew Davidhazy <ANDPPH@xxxxxxxxxxxxxxxxxx>]

> The photographer, Bjørn Rørslett, uses a Nikkor 105 mm
> UV lens with a Nikkon 18A filter and gets three
> distinct colors in his pictures: red,  blue and white
> using reflective UV photography techniques.  If he can
> do it, why can't I?

I did take a look. It was interesting. Unfortunately he does not seem to
explain how his photographs are made. This is especially important because they
fly in the face of logic and physics and photographic principles. Poor science.
My contention still is that since the 18A filter does not allow any red to pass
you will not  see any red in an image. In fact, I think you will be hard
pressed to see whites as well. But ... of course, he has the pictures to prove
it. What is lacking is a reasonable explanation.

regards,

Andy  o o  0 0 o . o  Andrew Davidhazy, Imaging and Photo Tech
       \/\/\/\/\/\/   http://www.rit.edu/~andpph  716-475-2592  
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