Hi sorry can't be much help with the close up rings found this link that may help though http://www.flickr.com/groups/macro/d...7603008217516/

I use a Nissin di622 flash gun for macro, it does a great job. It doesn't have the bells and whistles of a Nikon. What I find really useful is I just pop up the cameras flash and it will fire the Nissin without the need of any wires. This works on my old d5000 and should work on your D5200... Graham