Thanks for the information, and after reading the first post I ended up at the Kenko Pro, will this TC also work on my 70-300 vr?
I tried the combination of a D200, 70-300mm VR and a Kenko 1.4x DG teleconverter. It all fits together fine, and the camera meters and shoots normally. Autofocus operating is sluggish even in full sunlight and rapidly becomes unreliable as the amount of available light decreases.
But at least in my own tests, I found the results using this TC with the 70-300mm VR were not significantly better than simply cropping. I continue to use the teleconverter with the 180mm f/2.8, 300mm f/4, and the 70-200mm VR.
One of the biggest mistakes a photographer can make is to look at the real world and cling to the vain hope that next time his film will somehow bear a closer resemblance to it. - Galen Rowell
I use the Kenko Pro 300 1.4x and 2x extenders on my non-AFS lenses. They are quite good. I have also compared them to the Nikon 14E and 20E on my AFS lenses and found them to have nearly the same performance. Like with all TC's, stop down your lens by 1 stop for the best performance.
Thanks for the response, I love the quality of the 80-200 2.8 lens and want to get out further with it. I also have a 70-300 vr and could get 600 with a 2x but two different lens...what's a guy to do!!!
New at this, is there one TC that will work on both lens?
I have a Kenko1.4 that I tried with my 80-400mm and wasn't very happy with the IQ. I now have a Nikon 300F4 with which I use a Nikon AF-S 1.4 or 1.7 series two tcs and am very happy with those combinations. The 300F4 & 1.7tc gets me to 510mm. I don't know anything personally about the 70-300 but don't think a 2X will perform very well on it so actually I can't be of any help there and a 2Xtc on the 80-200 will only get you to 400mm.