I do understand the concept of DoF. I've used Canon's film SLR for years and I can recall very few photos that didn't have obvious focus or shutter speed issues that had issues like this.
In the first photo I can't find any point that's focussed, except perhaps the sky (and even that we won't know for sure). Given that the hill should cover most of the AF points, I'd have expected the camera to focus on at least one of its points, preferably the centre. But that's not the case. So either the camera focussed on the sky or the lens is simply not sharp at wide apertures.
NHL, could you please elaborate on the single shot AF vs AI servo AF problem?