When serious photo enthusiasts have desired a pocket-style camera to carry along when the big rigs were too much, there were only a few places they could look for a suitable tool. Canon has had its well-received G-series cameras, Panasonic has come to the game with the LX5, and Samsung has its new EX1. But Nikon is new to the category -- and we'll find out in our review of the Coolpix P7000 if it's viable competition or still too young.