SimonDP
Moderator
Post count: 2157

I know the quality from the 120-300 with a 1.4x TC, which is really very good (it pays for a lot of my bills) albeit in Canon mount, but optically no different than the Nikon mount. I cannot imagine (my gut feel, no personal experience) that the 70-200 with a 2x TC will perform better, at best it will be similar, rather below the 120-300/1.4x combo, having a general knowledge of 2x TC’s and their influence on IQ.