Just playing around to see how small of crop I could take out of a 12 mp picture and still have presentable results. The above 1.5 mp picture was about the maximum crop before it started looking grainy on my computer monitor, though it would still be perfectly fine for publishing on the internet.
Thinking ahead, with a 24 mp image I could can take a crop half this size and end up with the same quality results and with Ron's new 36 mp D800e I could take a crop one third the size with the same results.
Took this picture this morning handheld with the Sigma 120-400. Definitely addicted to VR and OS!