Re: [ATM] Wratten #3N5 filter responses

[Jarvis Krumbein <jkoptic@juno.com>]

Another possibility for the Wratten 3N5 filter is for color correction
when using B&W film.  Most of the aeriel camera lenses available as WW2
surplus after the war required the use of a yellow filter for their
intended use.  These included the Kodak Aero Ektars (both the 7" and 10")
that were popular as well as all the various Aero Tessars.

Jarvis Krumbein

On Sun, 10 Jun 2007 00:40:28 -0400 hermit <hermit@outofoptions.org>
writes:
> Just deleted a long question after reading it and looking up some 
> things.  Bill Prewitt suggested it was a moon filter.  "Shooters 
> Glasses" are often yellow to help block haze (and do a few other 
> things 
> not related to this).  So, this would be a combination haze/neutral 
> 
> density filter for the moon?
> 
> Ken Lowther
> 
> John Lynch wrote:
> > To the ATM group:
> >
> > My thanks to those individuals on the list who
> > responded to me regarding the Wratten #3N5 (Neutral
> > Yellow) filter.   Descriptions, a nice comprehensive
> > filter list, and transmittance graph were provided
> > that will prove to be very useful.  The filter that I
> > purchased was one of an original set manufactured by
> > VERNONscope & Company, and is no longer made.  The
> > amount of knowledge available through this group is
> > phenominal!
> >
> > Thanks again.
> >
> > John Lynch
> >
> >
> >
> >        
> >   
> 
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> 
> 
 
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