#5. "RE: D7100 coupling with 500mm AFS II & 1.4X" In response to In response to 0
Meadow Heights, AU
Just to add to this, My D7100 works with 1.4, 1.7 and 2.0 (III) converters. It is spot on focus on the 1.4 and 1.7, the 2.0 is not a great combination, but I'd hardly blame the camera for that. Its useable, but not a great combo.
Others have pointed to the lens and it does seem to be the likely culprit.
Hope you get it working, as it will be a great joy on the D7100 I think DJ
.. I set out to discover the inventions of God. -John Muir