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| p.1 #9 · p.1 #9 · anyone had experience with 1.4x or 2x teleconverter for EF 70-200 f/2.8L IS II USM |
You might want to throw Tamron into the mix for consideration as well. From all I've read, it compares favorably to the Canon. I wasn't able to justify the extra cost, so I went with the Tamron.
I thought it was awful at first on my 70-200 f/4, so I sent it in to Tamron. Somewhat like Will mentioned with his Sigma, Tamron said the TC was perfect and that something was wrong with my Canon lens.
I thought, here we go...the run around. So I sent my lens back to Canon and sure enough, the lens was out of alignment somehow and the left side was 'ever so slightly' soft. This was hardly noticeable without a TC, but with it, the problem was greatly magnified.
Since getting the lens back, the combo works well together. Tamron was right.