Just took the lens out of the box and put it on my gf1 for the ride home from work. The 14mm 2.5 Panasonic lens and the GF1 feel great together. The lens is so incredibly light, and auto focus is quick, even in low light. It's a perfect match for the gf1. I will update with more pictures and thoughts as I get familiar with the new Panasonic 14mm