I bought the G Sonnar 90/2.8 lens and was waiting to buy a camera to mount it!! I finally settled on the GF1 and had to wait for 2 long months for my visit to Boston. This was one of the first shots captured on a muggy evening in Doha of my daughter. The temperature was a sweltering 40C at 5PM!! That is summer in the Qatar. The 2x crop factor makes this lens a telephoto. The quality is simply out of the world. I then found a Planar 45/2 online and promptly bought it. It is now always on my GF1.