I am thinking of buying a TC Teleconvertor to use in conjunction with my Nikon 70-200 f2.8 VR1. I will be using it on my D7000. I am just after everyone's thoughts on which one to get. 1.4, 1.7 or 2. Is anyone of these sharper or softer or works better with the 70-200. I'm searching for answers from the wealth of knowledge on this site
Cheers Steve