One of the reasons I ended up with my Panasonic G2 is the ability to buy adapters for almost any other lens available. Because the camera has no mirror, there's plenty of room for the adapter to place the adapted lens at the correct distance from the sensor (the Nikon F adapter is a hair over an inch long). I don't have a lot of legacy glass, but have had a good time trying them out. It's also a relatively inexpensive way to play with different kinds of lenses, narrowing down where to invest in the future.