Of all the new Nikons announced today, the P310 is likely to be one of the most popular. Its 4.2x (24-100mm) focal length may not deliver the big bad zoom of the P510, and it can't do RAW like the P7100, but it compensates with some serious optical features instead. Among them is improved image stabilization, which Nikon says will let you take blur-free handheld shots at four stops below what would otherwise be possible. There's also a "market leading" f/1.8 maximum aperture, which further aid low-light shooting as well shallow depth-of-field shots. Finally, the form factor is really important. This camera is a lot smaller than either the P510 or the P7100 and it feels great in the hand: not quite pocketable, perhaps, but certainly portab
