1DX + 1.4 TC focusing speed vs. 7D + same lens without TC
I'm wondering if anyone has done a comparison of focusing speeds between a 1DX and 7D when the 1DX combo includes a 1.4 TC and the 7D doesn't. My reason for asking is that I'm a birder considering buying a used 1DX as upgrade for my 7D - and as almost all birders, I'm reach limited. To be very specific: Has anyone compared the focusing speed of a 1DX + 1.4 extender mk III + original 500 mm L IS to the focusing speed of a 7D and the same 500 mm ?
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|Feb 6, 2014|