« on: November 23, 2013, 05:10:40 PM »
I switched from Nikon to Canon recently, and for my crop body went from a D7100 to a 7D. The 7D seems great with the major exception of high ISO performance, which I find disappointing compared to the D7100. Yes of course the D7100 is much newer sensor technology, so it should be better at high ISO, but I have high hopes of a 7d mk II in 2014 that would trump the D7100 at high ISO because of even newer sensor tech.
But now with the 70D having dual pixel AF, which is of little use to me since I don't shoot video, I assume this will be in the 7d mk II as well. My question is: Does dual pixel AF have the downside of hindering high ISO performance? I have read this from uninformed sources and am curious if there is truth to it. As a still shooter, I would be way bummed if technology that mostly benefits video shooters was really hurting us still shooters! I want the best high ISO performance possible in a crop body for stills and would be thrilled to see a 2 stop improvement over the current 7D, but man what a bummer if we saw only minor improvement as a result of dual-pixel tech implementation. (would be WAY cool if Canon offered 2 versions, a video optimized version and a sills optimized version). And before you tell me to just go full frame if I want quality high ISO, I own a 5d mk III and love its high ISO, but will always switch to the crop when I am shooting wildlife or other reach-limited scenarios.
Thanks for any clarification on this dual-pixel AF tech question!