First impressions:
I have used both the 1.7 and the 2.0
converters from Nikon. I mainly used them in combination with the Nikkor 105VR 2.8 or the 70-200VR 2.8 lenses.
On the 70-200 2.8 it is still possible to use auto focus because the
resulting combo was f5.6. With the 70-200 2.8, I had decent pictures even at
400mm 5.6 but quality is higher with the 1.7 TC.
Pros
- cheap way
to have a virtual long lens
- good quality when used on fast
high end glass (70-200VR
2.8 for instance)
- AF still possible if fast lens (2.8)
Cons
- picture
degradation (higher on the 2.0 than
on the 1.7)
A few pictures
An example
