I used the D700 with the 300 f2.8 AF-S lens
and TC17EII 1.7 extender. Equates 510mm f4.8
The lens was closed to F18, camera to 1/160th.
The 1.7X on the 300 yields incorrect EXIF, which
incorrectly suggests use of an 700mm lens.
Nikon D700 1/160s f/18.0 at 510.0mm iso640
300mm f2.8 AF-S, TC17EII
full exif