Bozsik wrote:
I have, and used, the 70-200 w/2x teleconverter, before I bought the 80-400mm. It was a great combo. Not as sharp as the lens w/o the converter, but excellent and fast to focus with. I do not have the D800 to use with it. I used the D7000, D7100, D600, and the D610, all with great results.
Yes, better results will be obtained on crop frame bodies - when using ANY TC combo ......