Hey folks. Long time nikon shooter here, i never really looked much at Olympus, now that the OMD has taken me over, i am trying to learn a bit about these cameras. I have been doing some reading to try to figure some things out, and just want to confirm. 4/3rds cameras use the same size sensor as the M4/3's correct? The main difference being mirrorless vs DSLR, and smaller mounts? With the 43 to m43 adapter, the lenses will AF correct? How big are the 43's lenses? are they generally as large as thier aps-c and DX, fx counterparts? It is amazing the level of confusion of switching brands. The naming convention for the pen cameras is terribly confusing.