In article , sms says...
The faster auto-focus

Is that really faster? Mirrorless cameras have a huge advantage because
their sensors see the scene all the time, analyse it all the time and
can focus much better on moving targets.
Mirrored cameras instead are essentially blind all the time and have to
rely on limited AF sensors.
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site