Here is a Canon EOS-1D X Mark III review, comparing the AF tracking system with the Sony a9 II. Jared Polin (aka FroKnowsPhoto) compared the AF tracking perfomance of the Canon EOS-1D X Mark III and the Sony a9 II. The Canon EOS-1D X Mark III manual is online at Canon USA, and you can … Continue reading Canon EOS-1D X Mark III Review: Real World AF Comparison With Sony a9 II