http://dc.watch.impress.co.jp/docs/news/20160316_748532.html

ISO test

http://www.focus-numerique.com/test-2918/reflex-canon-1d-mark-ii-bruit-electronique-12.html

http://www.ixbt.com/digimage/canon-eos-1dx-m2.shtml

Although the 1D-X II shows significant increase in dynamic range at low ISOs in our dynamic range tests, high ISO Raw performance remains fairly similar to its predecessor, falling behind the Nikon D5, and even slightly behind the 42MP Sony a7R II.

http://www.dpreview.com/news/8090146652/canon-eos-1d-x-mark-ii-studio-tests

Canon EOS 1D X Mark II is a superb camera which performs extremely well in a variety of different tough conditions that professional photographers will deal with on a daily basis. It’s worthy of an upgrade for many, but others may be able to hold on until the asking price drops a little.

http://www.photographyblog.com/reviews/canon_eos_1d_x_mark_ii_review/

Canon EOS-1D X Mark II Digital SLR Camera - Premium Kit with 64GB CFast 2.0 Memory Card and Reader at http://www.adorama.com/ICA1DXM2KP.html

http://www.focus-numerique.com/test-2918/reflex-canon-1d-x-mark-ii-presentation-caracteristiques-1.html

Perhaps the most impressive feature within the Canon 1DX Mark II comes with the new focusing system. This systems focusing system is fast and accurate, like, really fast and accurate.

Overall, the Canon 1DX Mark II is without a question, the best Canon camera I’ve ever used. The images looked great, the speed of the camera is unbelievable, and the build is unparalleled. Canon took what everyone loved about the Canon 1DX classic, and improved it on every single level, and managed to do it and keep it cheaper than the Nikon competitor.

https://www.lensrentals.com/blog/2016/05/lensrentals-reviews-the-canon-1dx-mark-ii/