[Leica] Re: Fogging film during lens changes

[rpalmier at depaul.edu (bob palmieri)]

Folks -

In fact, it was a few occurrences of this phenomenon that caused me  
to join the LUG in the '90's looking for an answer.

The one I'm sticking with is that yes, M's will sometimes show a  
bright flare on a frame when lenses are swapped in bright sunlight.   
(In fact, I believe I saw mention of a warning about this in one of  
the M factory owners' manuals once.)
I was also told that the 6's are less susceptible; indeed, I believe  
that I've only seen it happen on my M2, and my M6 does have some  
baffling that my M2 doesn't.

On the other hand, the search for the answer to this also led me to  
seek out an old college friend, a venerable photoscientist and  
longtime Leica guy who I hadn't spoken with for well over a decade.   
We've been in touch weekly ever since.

Bob Palmieri