.
One of the D800's appealing attributes is it's ability to crop cleanly. I have a Sigma 50-150 f/2.8 HSM II that I shot all the time on my D90,
and the when I picked up a D700 I would still occasionally shoot it on that, in DX mode, because I liked that Sigmas AF speed, it size,
and it's optics, but the 5.5MP of the D700's crop mode kept those shots ideally at 8x10 or smaller prints. So, I was excited to give the
Sigma 50-150 a try on the D800, where it will deliver about 15.5MP in the frame.
While the Sigma can't quite match the 180 2.8 prime, and DX mode only gets you around D7000 territory in resolution and SNR, it's still a
quality combo, very fast-focusing, very versatile. Below are some shots, almost all wide-open, several at 150mm which is supposed to be
this lenses' weakest point (150mm wide-open) :
He really does not want to be photographed today
80mm f/2.8 ISO 125
98mm f/2.8 ISO 220
Neither does he
150mm f/2.8 ISO 220
Bug Discovery!
50mm f/2.8 ISO 900
75mm f/2.8 ISO 320
These last two are at MFD of the Sigma:
150mm f/2.8 ISO 800
ISO 720