I am pondering getting my dream portrait lens (Nikkor 135mm f/2 DC), but the Sigma 135 f/1.8 has delayed my plans. In the meantime, the 80-200 f/2.8 is still a very capable portrait lens. For the price to performance ratio, it is hard to beat the lens. Very few sub $500 lens can perform to its standard IMHO. The Nikon Z 70-200mm f2.8 VR S produces pretty sharp results in the inner image circle at 70mm focal length even wide open. But to get the outer areas sharp the lens needs to be stopped down to at least f11. Following is a sequence of close-up shots at 200mm focal length and 1:4.6 magnification with the crops from 0mm, 8mm, and 18mm off the As this image quality comparison shows, the 70-200 OS's predecessor, the Sigma 70-200mm f/2.8 EX DG HSM II Macro Lens, performs better at f/2.8 and f/4 except at 200mm where the OS version holds a slight advantage. Expect a modest amount of CA (Chromatic Aberration) in full frame corners at 70mm f/2.8. TduKrV.