Just for kicks while trying to get a close up of the goalie's helmet I threw a TC1.7 on a rented 400 AFS-II f/2.8. The metadata says it is 950mm while it should only be 710mm. Is the metadata wrong or is the 1.7 for some reason extra powerful at magnification when combined with the 400mm AFS-II f/2.8. I'm not sure if it was actually at 950 or 710 as both are soo zoomed in that I wouldn't be able to tell the difference, whatever it was it was incredibly difficult to get a sharp shot with.
For NX 2, at least, the metadata reads it with the TC factored in. So, you can get a focal length for a lens that technically does not reach a certain length on its own.
Okay, just wanted to make sure it wasnt something broken with my gear. Sucks that it reports incorrect metadata And for the other person's question, no it was with my d700, I keep the 70-200 on the d90 at all times and use the 24-70 or whatever I'm renting on my d700
The exact same thing happens on my D700 with my 1.7 & 300mm 2.8. It shows 700mm as the focal length. I am not shooting in crop mode. If there is a reason for this I would be interested in hearing it.
+1 
And for the other person's question, no it was with my d700, I keep the 70-200 on the d90 at all times and use the 24-70 or whatever I'm renting on my d700