I took my new Nikon D7200 into the Adelaide Central Market this week to have a bit of a play. There is no doubt that it is a major improvement on my old D90.
Here are a couple of shots taken at various ISO levels, from 1600 to 18000. As Lightroom does not yet support the new camera's raw files, these are jpegs straight from the camera. No noise reduction has been applied.
ISO 1600, f4.5, 1/200sec
ISO 9000, f8, 1/60sec
ISO 12800, f8, 1/60sec
ISO 18000, f8, 1/60sec