My adventure with the 100-400L + 1.4 ex II
I went out on Friday to try an 100-400lL + 1.4 ex II with the Canon new firmware. My first impression is the AF is kinda slow. You almost have to pre-focus. I also lost focus if I try to do high-speed continuous shot.
This is my result
Canon 5D Mark III, Canon EF 24-105L, EF 100-400L
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