Filter questions

["Keith Zimmerman" <zz_ir@xxxxxxxxxxx>]

I'm planning for the up-coming release of this year's Konica by increasing
my tool inventory of filters.  I have a couple of quick questions.

1.  Can someone discuss the optical pros and cons of the various materials;
polyester, gelatin, resin, and glass.

2.  Is there a site anywhere that has this type of information?

3.  Which material works best?  Or are there instances when one material is
better suited than another?

4.  Which filters would be candidates for inclusion in my new IR toolbox?  I
currently own a 25.

Hopefully, this information will allow me to make a more informed decision
on the type of filters to buy.  Thanks in advance.

Keith Zimmerman
zz_ir@xxxxxxxxxxx


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