The R5 with EF 2xTC III does work, but whereas the 1.4x TC III is virtually seamless, the 2xTC is noticeably slower to AF and there is some loss of IQ. On the 1DX III, the 2x TC was solid. Much improved over the R5.
The R5 with EF 2xTC III does work, but whereas the 1.4x TC III is virtually seamless, the 2xTC is noticeably slower to AF and there is some loss of IQ. On the 1DX III, the 2x TC was solid. Much improved over the R5.
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