[Leica] Getting close to Photokina... I want to start anew rumor....

[red735i at earthlink.net (Frank Filippone)]

I don't think that is the correct issue, George.....

The micro lens filter may be needed to correct oblique light rays to get a
better overall flat gain in the sensor stages... but that has nothing to do
with the IR filter ( which may be simply a coating on the microlens filter-
plate).

It is the lack of IR filter that causes Purple - Black Polyester
shirts........  and, to the best of my knowledge, Leica M8 is the singular
( non-P+S)  camera to lack this filter  The coating, if that is what it is,
is too thin to effect any optical characteristics other than frequency
response........ ( a few microns thick..... ).
.
Frank Filippone
red735i@earthlink.net

the dmr has an IR filter on the sensor


the slr retrofocus wide angles achieve angles closer to 90?
unlike film - sensors prefer light beams coming as close to 90? as  
possible.

the issue for the M digital was and is
true wide angle lens designs casting their focused image rays at  
severe angles to the sensor.
this required a filter with special offset microlenses on top of the  
sensor to reduce vignetting

the questions remain:
        how many "filters" do we lay on top of the sensor?
        what effect do the filers have on image quality (including the all  
important fine micro detail)?
        what compromises in image quality do we make?

Fond regards,
George