Richard
I think it is a 18a filter: info can be found under Willem Jan
Markerink's home page:
http://www.a1.nl/phomepag/markerink/mainpage.htm
Specific links:
http://www.a1.nl/phomepag/markerink/uv-lens.htm
http://www.a1.nl/phomepag/markerink/uv-tips.htm
Cor Breukel
http://ruly70.medfac.leidenuniv.nl/~cor/cor.html
On Wed, 8 Dec 1999, Richard Morris wrote:
>
> Seeing the correspondence about UV filters I have been asked by one of my
> students if there is a filter that lets though only UV light?
>
>
> Richard Morris
> Brunel University, UK
> richard.morris@brunel.ac.uk
>
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