Flash? Who needs a flash? Definitely not you if you're shooting with the Nikon D4 ($6,000). The new flagship DSLR features a 16.2 megapixel full-frame sensor, with an ISO range of 100 to 12,800 — expandable to a jaw dropping 204,800 — or enough to shoot in near total darkness. Other improvements over the prior model include 10 fps shooting, a 91,000-Pixel RGB 3D Color Matrix Metering III sensor to deliver even more accurate colors and exposure, an improved 51 point AF system, a 3.2-inch LCD, and 1080p video recording. We wish you luck finding one — Amazon sold through its pre-order allotment in less than an hour.