I've heard that the Nikon-1 4J has an electronic shutter (based on what it says in the official manual), but I've also read that it keeps track of the number of shutter uses (as I've seen shutter use count shown in Ebay auctions for the Nikon-1 4J). I thought that only a mechanical shutter needed to have its use count recorded, due to the fact that mechanical parts wear out simply from friction from use over a long time. But electronic shutters don't have mechanical "wear and tear". So is the 4J keeping track of a useless statistic, or does it actually use a mechanical shutter, contrary to what its manual says?