Well it's a question I'm trying to answer to. Why? I'm selling all my photography gear other than m/43 and diving into m4/3 and 4/3 Yes 4/3. Seems anachronistic with all Canikon new gear etc. But I love Zuiko lens and for my needs and limited skills having m4/3 and 4/3 in order to use the bigger lens will be just fine. At least so I'm thinking now. When everyone seems to go forward to new technology I'm leaping backwards so am I mad? P.S. E-30 is coming in next week and so the 50-200 I.