Extender 1.4 to use with 70D and EF 70-200 f/4 IS. Any compatibility problems?

I am planning to get the Extender 1.4 to use with my EOS 70D and the EF 70-200mm f/4 IS. Are there any compatibility problems with this combination?
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ebiggs1 wrote:
"... they will work perfectly together."
Perfectly may be a stretch but, yes, they will work as well as the combo can. Anytime you add something like a tele exrender you have to give up something. In photography you give to get. There is no free lunch. Fortunately you are starting out with a pretty good lens and can afford to lose an f-stop and some IQ.
Let me pose a slightly different question. Suppose you already have (as many of us do) a 70-200mm f/2.8L IS II. Suppose you add the 1.4 tele-extender. The combination would result, I believe, in a 98-280mm f/4, a potentially useful lens that doesn't appear in Canon's lineup. So given the cost of the TE and the image quality of the combination, is buying the TE a smart move?
Note that buying the TE does not compromise the 70-200 in any way, since it's still as good as it ever was without the TE. The combination, for the price of the TE, stands or falls on its own.
Bob
Boston, Massachusetts USA

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Extender 1.4 to use with 70D and EF 70-200 f/4 IS. Any compatibility problems?

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