BTRF

[pbadcock@xxxxxxxxxxxxxxx]

Hi Willem,      
                I am interested in buying a few of the polyester foil 0.4mm IR 
filters(#87C).  I have an F801s like Jaap, so the dimensions of 24.0x0.4x??mm 
would suit my camera.  I currently use a #89B in front of my lens and you said 
you were researching about a #89B BTRF at the moment.  Is this a glass or 
polyester type you are looking into?
Is the material for the 0.4mm polyester foil #87C BTRF commonly available, or do
I buy some through you??

regards
Peter B.

PS. I shortened 'BTFR filter' to 'BTRF'!

______________________________ Reply Separator _________________________________
Subject: Re: filter between the rails
Author:  infrared@xxxxx at INTERNET
Date:    09/8/97 6:37 PM

..........

I am currently also doing some research on a thin #89B for the same 
application, but then of course for Konica, Ilford and Agfa. I have 
at least one solution, but it requires a rather large minimum order, 
so this is only feasible if I can get a bunch of filters cut in 
exactly the same size....and fitting more than one brand/model of 
camera....my EOS-1 measures an exact 24.0mm height
between the filmrails (width is not crucial, I point at 45mm). 

So a question for those having a depth-gauge at hand: would this 
24.0mm fit other brands & models of cameras?

PS: don't poke that depth-gauge through your shutter....pick the 
sides of the frame rails, not the middle....;-))


- -- 
Bye,

Willem-Jan Markerink


      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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