I am three days in to a hunting trip that I have taken the new 7d mounted on my 500mm f4 L.


It felt like the 7d actually hit the af point slower than the 5d.


So I decided to test this today. I set up a test on tripod at just a bit over the minimum focus distance. I then would turn the lens to infinity focus.


What I found is that the 5d would make focus just slightly quicker than the 7d.


With this big lens, and both set to single point focus the average focus time of 1.4 for the 5d and 1.5 for the 7d.


I am going to check the ai servo setting tomorrow, I just tested the 7d on this setting and it would take 2.3 seconds.


One other thing I noticed about the 7d, occasionally, not every time it would make focus, and the red flash of confirmation would be delayed a second. I discarded those times from my result and not real sure why it did it.


In other areas it is obvious the 7d af is superior. It finds contrast much easier. I can