Originally posted by Anvh Ricoh solved the problem quite well with the M-mount module, maybe the same micro lens filter might do the trick.
But i think they should keep the "standard" lens focal length as the register distance.
So for APS-C 28~30mm looks like a nice compromise.
But that 1 cm of difference won't do you any good in making the camera more compact though, it just make the lenses potentially better.
Actually the Leica M mount is 27.80 mm.
I wonder if Leica and Ricoh/Pentax could work together?
Leica could make rangefinders to combat the Fuji and Pentax can make the cheaper K-01 like cameras or something like that to go against the Sony and other EVIL compacts.
Might be fun, certainly if they can shar lenses this way like 4/3th does and there are some nice M leica lenses on the market =]