I did shoot part of an Indy race with it, but after testing more images in Lightroom and seeing the unacceptable noise in shadows at low ISO’s I had to send the camera back

Superb noise and image quality

If yu are looking for the clean shadow noise of your D3 at ISO 200 to 1600, this is not your camera.

This camera can shoot indoors without a flash at a reasonable ISO without significant noise in the images

It was time for a change, especially since my D4 has gone through 475,000 plus shutter actuations, with a shutter rated for 400,000.So how did it do?The D4 would shoot at ISO 6400 with very little visible noise, and 12,800 with significant noise that was still acceptable to me.