One of the reasons I decided on a 365 project was to gain experience with and learn how to get the most out of the Nikon d7200 that my husband got me as an anniversary gift last month. My camera before that had been a Canon Powershot SX10 IS. I had a good run with it (10-ish years), and I got good macros with it with the addition of a Raynox dcr-150 macro adapter. It was also okay for landscapes and general outdoor photography. But if the lighting was less than ideal, I got poor results. I don't think I got a good indoor photograph with it the entire time I was using it.
So to figure out what the d7200 was capable of indoors and to figure out the best settings, I decided to wander around my house last night and take photos in the extraordinarily poor lighting we've furnished ourselves with. All the photos were taken with a Nikkor AF-S DX Micro 85mm f/3.5 ED VR with the vibration reduction turned on. I like aperture priority, and these were all taken in the close vicinity of an f4 setting.
I started with the ISO set to auto, but it was choosing really high settings, and I didn't appreciate the level of noise. I used trial and error to find the lowest ISO setting I could use and still get good handheld shots. That ended up being 2000. The toes are the only shot here taken at a high ISO (22,800). There's more noise in the background than I like, but I like it anyway. :D
The lighting in my house is very yellow, so the color cast in the photos is actually a pretty accurate representation of reality.