I was using hi2 - 25600 iso in most of my practice pictures.
ISO and EXPEED 4
Sensitive is up from 6400 on the D5200 to a full 12,800–extendable to 25,600 in Hi2 mode. The EXPEED 4 process should help keep images clean in low light. It can also sustain up to five frames per second in burst mode, supports subject tracking, handles white balance, AF, and exposure care of the integrated RGB metering sensor, and has 16 dedicate scene modes with nine creative filters–including (but not limited to) modes like HDR and Toy Camera.