The image is blurred (and won't focus) and goes bright white / over exposed and then really dark (under exposed) in a few seconds as if the lens is ranging through the aperture / iris range. Some times it settles down and then resets itself and begins to focus and expose as per the settings I've dialled in but at other times it just won't focus etc. I've tried removing the lens and refixing it back on the lens mount and on occasions this works but doesn't at other times. The lens is 6 months old, in excellent condition, little use and the mount and lens appear as new / clean and unmarked. When I remove the FE PZ 16-35mm and replace it with my Sony 24-105 F4 G Lens this doesn't occur so I'm pretty sure it's the lens.
