Far more than just rehashed sensors in smaller bodies, Nikon's new Z7 and Z6 cameras mark the start of a completely new system. The company's first full-frame mirrorless models, they use the new Z mount that's wider than before, letting more light in and packing other tricks like a ring on the lens that can be used to control everything from focus to exposure compensation. They're powered by the Expeed 6 image processor, have fast hybrid AF systems, and offer five-axis in-camera stabilization. The Z7 is more for pure shooters, with a 45.7-megapixel sensor, while the Z6 is more versatile, with a 24.5-megapixel sensor, higher maximum ISO, faster burst, and higher-quality video capture. Both are arriving on shelves later this year.