Hi guys,i understand that the leica uv/ir filter is made for the digital m8 to compensate certain problems found in m8.with the new m9 on the market,i see many people selling their m8 to upgrade to a m9.i also realise people who sold their m8 is also selling off their uv/ir filter.my question is.why is everyone selling it?cant the uv/ir filter be use on normal analog leica or even the m9?what if a collector who owns more than 10 leica lenses using uv/ir filter who use to shoot with a m8 and now with a m9,does it mean that he needs to purchase more than 10 new normal filter for the lenses nw if he is shooting with m9 or other analog leica?