I recently got this LX5 and wide angle conversion lens and have been having fun shooting with it... but this thread is about using the Canon FDn 50/1.4 on the GH2. Lens was set at f/8. I think the Canon FDn 50/1.4 is among the very best choices as an adapted lens for m4/3, especially for selective focus images. They're readily available, not expensive, and perform very well. As for the LX5... when you want a "grab n run" camera, something smaller, lighter, and more versatile (24-90mm equiv. lens f/2.0-3.3), in a smaller form factor than m4/3, I think the LX5 is a great choice. The wide angle lens does negate this advantage, but is fun to have... yields 18mm equivalent field of view.