Hi. I am interested in mirrorless digital cameras with interchangeable lenses however I know little about digital having only a Panasonic point and shoot at this time so I need advice. I looked at the Pentax Q system but didn't like it because of sensor size and fixed aperture lenses. I also disliked the Nikon J-1 because of sensor size. I haven't yet reviewed the Olympus Pens or Sony Nex or Canon. I have heard that 4/3rds is "dead" but don't know why. Micro 4/3rds seems to be the direction to go. I am interested in using old film lenses on whatever system I buy into so cheap adapters are a big plus. Also, I wouldn't want, for example, an old 50mm film lens to be the equivalent of a 300mm lens on the digital due to sensor size, etc. What camera/system should I be looking for? My shooting habits are everything but particular interest in panoramics, low light, macro, street photog.