[davidmanze]

I can only assume that the onion rings get worse with distance from the image center. On DX, the section where we look at background highlights is much closer to the center than on FX.


Regarding bokeh fringing: there shouldn't be any noticeable difference, at least not in the review shots... because: I simply reused the FX ones

 Ok for the onion ring bokeh explanation.

 

 "Not OK" for the bokeh fringing examples........"the FX review shot is a different shot from the DX" !!...... Queen image (and the other one)...........either that or you have been doodling over them with a purple and green felt tip! 

 

   Also I can't find the FX review in the Nikon FX section.