Pro cameras no longer have to be big in size. Enter <A HREF="http://www.dpreview.com/news/0302/03022703sonyv1preview..." target="_new">Sony DSC-V1</A> the handy professional digital camera. It's got 5.1 mega pixels, nightframing & nightshot infra red system, manual exposure controls, 4x optical zoom lens and lots of other pro features.
It's designed to go head to head against the Canon G5 and G3 (Apple took designation of G4 and won't let Canon use it.) The Canon G3 and G5 are labeled prosumer which means they are better than any consumer cameras, but worst than any professional cameras. A true professional camera would be a digital SLR camera such as the Canon EOS D-60