Hey guys, I posted this on DPreview and I still don't see my post showing so I thought I'd try here. My 12-40mm lens won't auto focus for some reason. If I swap to another lens, it works like normal, half press and focus square turns green etc. With the 12-40mm the square is just grey no matter what I do. Does anyone know what I did, or what this could be caused by? I have menu dived and checked and re-checked my AF settings, mounted/unmounted the lens a few times, just don't know how to fix this. Hoping I'm just an idiot and it something simple. Thanks in advance.