Re: HSI and Leica M6

[GMA <george@xxxxxxxxxxxxx>]

ROB HEYMAN wrote:
> 
> I have joined this group in the hope that you, who are much more
> knowledgeable than I, can cast some light on a perplexing problem.
> 
> Negatives from my Leica M6, when using HIE, show a circle of higher
> density exactly in the centre of the image area. It is smaller than the
> white circle on the focal plane shutter blind, which is part of the M6's
> metering system, so I don't think it has anything to do with that.
> 
> It may be aperture related,since the problem only seems to be noticeable
> at the smaller appertures. ie, f11 and f16.
> 
> Could it be that the shutter blind of the M6 is  not impervious to infra
> red rays?
> 
> I would really appreciate any help, because I have had to add the extra
> weight of a separate system, Nikon, purely to use IR. I would prefer to
> carry just an extra Leica body and use the existing lenses.
> 
> Thanks in advance,
> 
> Rob
> 
>
Rob;

Take a look at the pressure plate.  Does it have a similar round pattern
in center?  My Olympus cameras have golf-ball-like dimples on the
pressure plate which show up in the negs.  I'm buying a new smooth plate
from Olympus so I can stop carrying a Nikon with 1 lens only for IR.
Course, it could be the shutter blind.  If pressure plate is smooth,
maybe calling Leica will get some answers.

george
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