Archived posting to the Leica Users Group, 2011/05/21

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Subject: [Leica] IR Filter Trivia
From: red735i at earthlink.net (Frank Filippone)
Date: Sat, 21 May 2011 07:24:58 -0700
 
Minutiae?

What is the number of the Wratten Filter that is the same as the 720nm
filter made by B+W ( 092) ?

89B

89B Filters are made for square filter holders ( made from plastic?)....

I note that there is a supply of 720nm filters in E39 size made by B+W.
Price is around $60.  The only ones I have found.

Frank Filippone
Red735i at earthlink.net
Replies: Reply from benedenia at gmail.com (Marty Deveney) ([Leica] IR Filter Trivia)