Re: filters and their wave length

["Willem-Jan Markerink" <w.j.markerink@xxxxx>]

On  7 Oct 96 at 23:38, scarleton@xxxxxxxxxxxxxxx wrote:

> 
>      Can someone post all the different filters for IR starting with the 
>      #25 and going up to the ones that don't let visual light pass and post 
>      where they start and stop letting light though?  I have seen some 
>      filter spread though a number of posting, but not all at once. 

For an extensive listing (including cut off wavelengths (0% and
50%)) and a conversion to Schott, B+W, Heliopan, Hoya and Cokin, you
better visit my homepage:

http://www.a1.nl/phomepag/markerink/mainpage.htm 

Short, from red to opaque:
red:
25
29
70
89B
opaque:
88A (contours visible only with bare eye, not in front of lens)
87
87C
87B
87A

--
Bye,

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      The desire to understand 
is sometimes far less intelligent than
     the inability to understand


<w.j.markerink@xxxxx>
[note: 'a-one' & 'en-el'!]

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Topic No. 4