« on: September 22, 2014, 12:17:14 PM »
I'm also a little bummed the AF system is not comparable to the 61pt system in terms of point sensitivity. It seems most of the points are only f/5.6 sensitive, which means there won't be any AF performance bonus at f/4 or f/2.8 (outside of the central point(s), at least.) I think the AF system will perform well, but for those who have f/4 or f/2.8 prime teles, I honestly don't think it will perform as well as the 61pt system. The 1D X also provides increased AF drive power, so it will still focus faster (not even the 5D III focuses as fast as the 1D X.)Hi,
Hmm... If I understand Canon AF technology correctly, all 65 points of 7D2 AF points are cross-type when using lens as narrow as f5.6 means that's it'll be cross type if you use a lens faster than or equal to f5.6. The center point will be dual cross points when use with lens faster or equal to f2.8.
If you compare the 61 points AF use by 1Dx and 5D3, only 41 points out of 61 points are cross-type when use with lens faster than or equal to f5.6. Of course, it had 5 dual cross points at the center when use with lens faster or equal to f2.8 which is better than 7D2.
Generally, all Canon lens (except some lens) without TC will enjoy the AF performance bonus of the cross-type for all the 65 AF points which is an improvement over the 61 points AF module, right??
Have a nice day.