- Mar 9, 2005
If so, which brand? How do you like the combo? Is the AF capability still OK? How much does it slow it down? What are the implications w/ the VR on?
That's what I read everywhere as well, so when I sprung for a TC, I went for the TC17EII as well. There is some degradation but I find it very acceptable. One nit though: you'd get 340mm f/4.8 on the 70-200 (it loses 1.5 stops, not 2 stops like the TC20EII does)PJohnP said:You might be surprised. The TC17E is much sharper than its bigger brother, the TC20E, and would give a net 340mm f/5.6 on the 70-200mm. Not terribly bad for a much less expensive add-on than a new lens.
Frank :Flew said:OK, I'll jump in. I basically agree with John (I know, I know, that's twice in one night ;-)). I have all three TC's, and use them regularly with the 300 2.8. I use the 1.4 the most, as it is almost as sharp as the 300 alone. The 1.7 is excellent, but isn't as sharp to me as the 1.4 or the lens by itself.
The 2.0 is definitely softer, and it looses 2 full stops (the 1.4 looses one, and the 1.7 looses 1.5 as stated in an earlier post). I do find the 2.0 to be useful in certain cases. With the D2H the 'cropability' is limited, and sometimes the extra reach of the 2.0 is better than shooting with either of the other TC's with a crop.