Kodak used to post the band pass characteristics of their filters on the web site. i've been looking for other things and came across the Wratten 87 filter for Infrared
Herb.... ----- Original Message ----- From: "Dr E D F Williams" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, November 11, 2003 2:04 PM Subject: Re: How to tell clear glass from UV glass? > We have at least one physicist who specialises in this area. He knows good > deal about light and optics. I'm rather rusty in this area. But you can be > sure that UV does not pass through camera lenses. What UV filters are > supposed to do is remove a large part of the shorter wave violet light that > would mess up colour balance at high altitudes and around the seashore -- > maybe the desert as well.
