Re: UV filter between film rails?

["Christoph Held" <Held@xxxxxxxxxxxxxxxxxxxxxxxxx>]

 Willem-Jan Markerink <w.j.markerink@xxxxx> wrote:

> On 30 Jun 97 at 13:21, Christoph Held wrote:
> 
> > The question is more or less twofold: 
> > Can a UV transmittent filter be mounted between the film rails of the 
> > camera, thus enabling focussing with mounted filter?
> 
> Theoretically yes; the main problem is the fact that UV short pass 
> filters are made from glass. You can get 0.5mm and 0.2mm thickness 
> made (with a minor compromise towards blocking the visible spectrum), 
> but exact cutting will be your main problem.
> My EOS-1 has a very slight protrusion (0.1mm) on the inside of the film 
> rails, on top and bottom. This way I can seal the filter light tight 
> to the film window. AFAIK Nikon's don't have this protrusion, the 
> film rails are flush with the film window. 
> 

Just checked the F4 and FG-20 bodies, they all look similar to my 
EOS-1 with respect to the protrusion between the film rails. 
BUT: are you telling me that you are using a *glass* filter between 
the rails? Sounds like a very difficult operation to cut and fix it 
between the rails precisely. 
But anyway, which filters are useful and where to get them from? Do 
you use adhesive tapes to fix them in their place?

Thanks in advance



 
Christoph Held
Fakultaet Biologie
Abt. Systematik der Tiere
Universitaet Bielefeld
D-33501 Bielefeld
Germany
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