[Leica] Filter for the M8 B+W 486

[durling at cox.net (Mike Durling)]

I suspect that the reflection may not be that much of a problem because 
other manufacturers seem to be using these coatings.  The problem with 
the oblique light rays passing through the coatings may be valid since 
Leica lenses are different in this regard, or are at least 
non-retrofocus design for the most part.

I am also guessing that they aren't fixing this problem on the already 
manufactured cameras because it is necessary to apply this coating at 
the factory and might require a difficult dismantling of the sensor 
block to retrofit it, or a replacement.

Guesses all.

Mike D