Re: UV film

[George Madrid <gamadrid@xxxxxxxxxx>]

   So any takers on how the focus shift will work out for the UV?  The
   last time I brought this up I took a wild guess and said it would be the
   opposite direction as the IR shift, but someone said it's likely to be
   the same direction.  Any input?

My input:  

I was under the impression that the focus shift for IR was due to the
longer wavelength of light in the IR spectrum.  Since UV would have a
shorter wavelength, I would therefore expect the focus shift to be in the
other direction.

Can anyone comment more definitively on the cause of the IR focus shift.
That's where we should find our answer.  

-georges

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Topic No. 11