Hoya claims that the K-5 has an improved-speed AF system (together with a higher continuous shooting rate on specs as well). Let's see how the new K-5 is compared to the old K-7 below!
The same lens is used, but unfortunately it's a Sigma. The cameras were put into AF-C mode (with automatic 11 points) with Continuous Frame Shooting mode at Hi speed. The *effective* frame rate are summarised at the end of the video clip, which I re-type here:-
|K-7||K-5 (frame rate priority)||K-5 (focus priority)|
|1.9 fps||3.9 fps||3.4 fps|
However, the tester didn't count and hasn't shown us the successful rate of images that are being in-focus against the failure rate of being out, which I think is just also very important. Btw, we can wildly assume that the results of the two cameras are equal, first.
Measurebated: K-7 is NOT a Machine Gun! :-(