kbmelb said:neuroanatomist said:wickidwombat said:... the higher voltage of the 1D power will drive AF faster on high end lenses
It definitely does - was shooting with the 85L II on the 1D X last night, and the focus motor moves noticeably faster than on the 7D or 5DII.
I can't imagine the 5D3 is as fast as the 1Dx but the 85 1.2L II is substantially faster on the 5D3 than the 5D2 also.
Part of it is likely on the 1D series there are "select" lenses that it provides more power to (higher voltage batteries), so the AF motor moves faster.
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