[JJ_SO]

Well done, JoJu, very well done actually, perfectly proved my point... q.e.d.

BS. My intention is not to prove anything right or wrong, but there are certain gaps in your reasoning which don't work out well in reality. And btw., if it's not about right or wrong, then why are you trying to demonstrate one of the most problematic ways to gain precise focus? Yes, maybe in 5-8 MP times. Yes, with optics available at 5-8 MP times this works precisely enough.

But either one remains in the era 5-8 MP (these pictures were not bad by any means) and uses gear from that era, or one wakes up and adjusts some focus techniques which no longer lead to maximum sharpness. Your recomposing will work in a landscape picture at f/8, as most other focusing methods will work as well, including using a DoF scale on a lens. But after that scenario it gets quickly more complicated.

Which proves my point how hard and stubborn the DSLR-fans stick to old techniques. What has worked yesterday, can't be wrong tomorrow - no matter how much easier life got in the meantime...