Sigma 70-200mm F2.8 EX DG APO OS HSM Nikon on Nikon D800 vs Tamron SP 70-200mm F/2.8 Di VC USD Nikon on Nikon D800 vs Nikon AF-S NIKKOR 70-200mm f/2.8G ED VR II on Nikon D800
Zoomed in to 105mm, we get the following results from the 70-200mm f/4G: And the Nikon 70-200mm f/2.8G VR II @ 105mm: Once again, the 70-200mm f/4 shows excellent performance throughout the frame and its center sharpness at f/5.6 is quite remarkable. Lastly, here is what 200mm looks like on the 70-200mm f/4G VR:I upgraded my 80-200 f2.8 to the VR1 version of the 70-200 f2.8 and it is outstanding and my most used lens. In my shooting the VR function alone is invaluable. I have not found a reason to move to one of the later versions, which all get steller reviews. My recommendation is moving to any version of the 70-200 f2.8 would be worthwhile.
Jb0m.