[Klaus]

....just sitting here with nothing to do looking at pictures and wondering....is too much rez the equivalent of too much HDR (or even just too much DR) in that the results can quickly become ugly when out of control....

 

....no need to answer....just wondering....i'm possibly wrong....again....

 

There is no such thing as too much detail. After all the maximum just reflects the real world. :-)

Of course, oversharpening can be very ugly but that's a different topic.