And my upward limit, ISO 51,200

I confess that it wasn't until after I'd edited my pictures and shipped them to the newspaper that I realized the camera had taken it this far. I set 51,200 as my upward limit, though the camera goes much higher. Based on tests I've seen from others, 51,200 is the point after which image quality degrades more rapidly. This picture, I think, is as good as a 6400 from the D7100. (I've not shot a D7200; when it came out there was something about it I didn't much like, though I don't remember what -- probably that it wasn't a D500.)