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[filmscanners] Re: film and scanning vs digital photography



Jim,

Glad the link helps and thanks for telling me about it!

Singh-Ray makes a filter designed by an acquaintance of mine, Tony Sweet, so 
there's a small personal connection with the company.

Best Regards,

Bernie Kubiak

 -------------- Original message ----------------------
From: "James L. Sims" <jlsims@knology.net>
> Thanks, Bernie.  Years ago I was developing a device for evaluating and
> collimating lenses and a mutual friend, Leon Kenamer, introduced me to
> Dr. Singh.  I had him make three narrow bandwidth filters (5 to 10
> nanometer bandwidth) for my autocollimator. He also made an infrared
> filter for my light source.  The lamp would burn the end of a Q-tip at
> one inch from the bulb.  With his filter placed directly in front of the
> lamp, I could hold my hand at that one inch distance from the bulb and
> felt only mild warmth.  His narrow bandwidth filters also performed
> perfectly.  Needless to say, I was very impressed with his work.  I
> discussed UV filters with him and he was making them at that time.  He
> did say that they were costly to make and was not sure about sales.
>
> Thanks again for the link!  I lost track of him after Leon passed away.
>
> Jim
>
> bkubs@comcast.net wrote:
> > Singh Ray is still around: www.singh-ray.com/index.html  but I don't see a 
> > UV
> filter in their catalog.
> >
> > Bernie
> >  -------------- Original message ----------------------
> > From: "James L. Sims" <jlsims@knology.net>
> >
> >> Most UV filters are just glass, with IR coatings - glass will filter
> >> some UV, I seem to recall less than 20%.  Singh Ray did make a real UV
> >> filter but it wasn't cheap and I don't know if he is still in business.
> >>
> >> Jim
> >>
> >>
> >
> >
> >
> >
> >
>
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