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Filter equivalent test

  • From: "Timothy E. Coffer" <COFFER.TIM@xxxxxxxxxxx>
  • Subject: Filter equivalent test
  • Date: Mon, 15 Jun 1998 11:50:09 -0400
I just purchased a B&W #090 filter. I noticed right on the box that the
Wratten equivalent for this filter is a #24 light red, as opposed to a #25 as
listed in most catalogues. For those of you that are really picky about
your filter cut offs, etc., keep this in mind. 

I'm waiting on three other B&W filters, the #091, 092 and 093, which are
supposed to be equivalent to Wratten #29, 89B and 87C respectively. I'll
let the group know if I get any more surprises! ;=)

Tim Coffer
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