A lot of ink has been spilled on the topic of cropped sensors and their impact on lenses. I think the interest bits seem to be that:

- You can build a physically smaller lens for less money with comparable image quality when you make the sensor smaller. Or, correspondingly, you can build a lens for a small sensor that does more things at the same price point. (Notable example: all these tiny cameras with their 30x superzoom lenses.)

- Micro 4/3 is becoming a legitimate cross-vendor standard. You can put a Panasonic lens on an Olympus body and it will actually work.

- If Canon or Nikon wanted to get into the Micro 4/3 game, then there would be correspondingly more competition, both for lenses and bodies because they would all interoperate nicely.

Will that actually happen? I really doubt it, but it sure would be sweet.