In a way this doesn't belong here in the picture galleries, but then again... My F80 is working really nicely, except for one thing: When I press the DOF preview button, something goes wrong. I can see the aperture work its thing, and then it clicks back to open, but the *next* frame is screwed. The shutter opens but doesn't close until I turn off the camera. I don't use the DOF preview at all, really, because I normally shoot in aperture mode and have enough of a feeling for the DOF to get what I want in most cases (and I don't do macro), but it is easy to press inadvertantly, and of course it IS an error. Anyone have experience with something like this? Is it something well known, easy to fix? I've already repaired the F80 once, I am not afraid of little screws and soldering irons, but I need to know what to do... Any input welcome (except "don't press the DOF button..." ).