My E-PL2 is doing the weirdest thing. When I place the camera in pinhole art filter, I can see the vignette on the screen. But, it disappears when I focus. Even the pictures taken have no vignette. Yet, if I let go of the shutter button, the vignette reappears. Is this a setting problem? Is this a firmware problem? (I am running v1.3) Is there a way of resetting the camera? Anyone else have this problem? Please help.