After what seemed like an endless amount of rumors and teases, Nikon has finally debuted its Z6 and Z7 mirrorless cameras. While both models have the potential to rival some of Sony's best mirrorless shooters, like the A7 III, let's talk about the flagship Z7 since that's actually scheduled to launch soon. It's also the only one Nikon is showing off at its event here in New York City. For starters, the Z7 sports a ridiculous 45.7-megapixel full-frame sensor, with a new body-lens system dubbed Z-mount. The new camera is powered by Nikon's Expeed 6 image processor and boasts a 493-point autofocus system that, according to the company, offers about a 90 percent wide coverage area.