Still trying to get my hands on the Panny 20mm pancake. In the meantime the CS 21 will have to make do. Some high ISO images taken wide open at F4!

GF1 with 20mmF1.7 on Amazon

Panasonic GF1 + Lumix R Mount Adaptor + Leica Vario-Elmar-R 1:3.5/35-70