Archived posting to the Leica Users Group, 1997/05/25

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Subject: M6 & Infra-red
From: ROB HEYMAN <rheyman@cynergy.com.au>
Date: Mon, 26 May 1997 12:25:54 +1000
 
> Can anyone solve this for me. When using my M6 with Kodak infra red
> B&W film outdoors in bright sunlight I get a circle of higher density
> exactly in the centre of the negative.

> This, of course, results in a lighter toned area which would cover
> about 2cm on a 9x13 print. It appears to happen only when the aperture
> is f11 or f16. The circle is quite sharp edged and could be related to
> the aperture size. This would seem to indicate that the shutter blind
> is not infra-red light-proof.....a disturbing thought.

> Has anyone ever had this problem? Can anyone tell me what may be the
> cause?

   Thanks in advance,

   Rob