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Re: Using 89B Infrared Filter with Regular B&W films


  • From: boblong@xxxxxxxxxxx (Robert Long)
  • Subject: Re: Using 89B Infrared Filter with Regular B&W films
  • Date: Mon, 10 Feb 1997 20:39:58 GMT

On Mon, 10 Feb 1997 18:34:30 GMT, Rolland Elliott wrote:

|I tried taking some landscape shots the other day with a VERY dark red =
infrared
|filter made by B+W.  I think it's equivalent to a Kodak Wratten 89B =
filter.=20
|I was using Tmax 400 film pushed one stop to 800. I was hoping to get an
|almost black sky with very white clouds.
|However when I developed the negatives the shots with the filter were =
not
|exposed at all, and the negatives were completely clear. =20

The Kodak data sheet shows a *very* sharp cutoff near 650nm for T-Max,
so your Nikon presumably "sees" the IR band much better than the film