
© 2014, Chuck Westfall/Canon U.S.A., Inc.

EOS-1D X and EOS 5D Mark III TTL-SIR (Through The Lens Secondary Image Registration) AF Systems Comparison In response to this question, Chuck Westfall (Advisor, Technical Information, Canon USA) was gracious enough to prepare a detailed technical comparison for us.Ĭhuck's information is a must-read for anyone choosing between these three DSLRs:ĮOS 7D Mark II vs. Then the 7D Mark II was announced with even more focus points (including a higher number of cross-type AF points) and many of the same or even improved AF features found in the 1D X/5D Mark III. The 1D X and 5D Mark III AF systems are easily the best I've ever used and my in-focus hit rate when using these cameras, especially with subjects in motion, has never been higher.


