Hello, I just bought a Panasonic GM1, which I paired with a Voigtländer 25mm 0.95. I realize now that whenever a lens without electric contacts (such as the Voigtländer) is mounted, the camera forces the use of the electronic shutter at all speeds, which sometimes results in banding under artificial light. Annoying. Since the mechanical shutter gets enabled anyway when the flash is used, I don't understand this restriction. Does anyone know a trick to force the GM1 to use the mechanical shutter ? Cheers John A.