Has anyone noticed that the GH2 has a sudden brightness shift when you move to a brighter or darker area when shooting video? Even when in manual mode. Even when using a fixed aperture lens. Even more bizarre, when moving to a brighter area like a window or light, the image gets suddenly brighter, when moving to a darker area it gets suddenly darker, the reverse of what you would expect. Does anyone know of a firmware update or some other fix? Or can anyone at least confirm that they've experienced this as well?