Fri 09-Nov-12 10:55 AM | edited Fri 09-Nov-12 10:57 AM by ericbowles
I have a lot of experience with the 70-200 and teleconverters. Stick with Nikon teleconverters for best performance - matching teleconverters with lens manufacturers works best. The Kenko Pro teleconverter is an option as it works with some Nikon lenses that do not accept teleconverters.
I would certainly add the 1.4 teleconverter. Image quality is very good and it nicely provides a little more reach. I would consider adding the 2.0 teleconverter, but you might rent it instead of buying. It is good, but I find there is a little loss in quality. I try to only use the 2.0 teleconverter when it is really necessary.
The big issue with teleconverters is the loss of light. The 70-200 performs better at f/4 or so rather than wide open. With a teleconverter you are losing at least another full stop - or two. So you are at f/5.6 to f/8. That only works with good light.
You will probably get better results using the center sensor with the teleconverters. Other sensors will work, but AF starts to deteriorate and you may get hunting. Frame your images a little looser and use the center AF sensor or one of the sensors that adjoins it.
The Nikon converters will not fit your 18-105. A 3rd party might, but you would not want to do that because your wide open aperture would be at f/8 or less. The 70-200 is the lens to use. No one previously mentioned this.
I like the TC14E-II best on the 70-200, followed by the TC17E-II. I do not have a newer TC20E-III so can't comment on that. Some like that combination, others do not.