Thanks for your response - but does a bigger sensor not need a bigger lens mount to get the optimal performance out of its 'bigness', or perhaps I have misread it? If that is true, then other manufacturers will need to develop bigger cameras if they use bigger chips for the optimal result? As you say, time will tell but your last line puts the lie to waiting - I want to start a system NOW - have waited a long time since my OM2!Originally Posted by Michael Fanelli