Just got a new Panasonic Leica Elmarit 45mm H-ES045E lens from Ebay. But it's focus appears not to function on my Panasonic G3 and GX7. Is there any hidden lens focus lock switch or something not described in manual? Like Olympus 12-50 needs to pull the focus ring first or some other trick? If not then then lens just appears to be dead.:-( When camera is powered on it's focused to macro distance 15 cm and focus doesn't change automatically nor when set to manual. Rotating the focus ring doesn't have any effect. Firmware version of lens is 1.0 and I can't find any newer one. I can also hear Mega O.I.S hum inside lens. It's warranty repair in Europe is also obscure because there is no purchase place nor date in warranty card.