tke918: My 14-140mm rubber zoom ring had gotten loose 3 times already and I had to send the lens to replace the rubber. I just hope it doesn't happen to this 12-35mm lens.
Same here. My Panasonic Lumix 14-140 rubber zoom ring is constantly slipping, and the lens isn't all that sharp anyway. Plus the GH1 that it is mounted on has really disappointed me with spontaneous non-functioning of manual focus and super over exposure of the metering. Absolutely no reason for any of it considering how I baby my cameras. All to say that I've come to have a low opinion of Panasonic stuff. I hope Pany gets it right with the new 12-35, but I doubt I'll buy any more Panasonic camera equipment.