Myślę, że najlepiej podsumował poziom owego "testu" tko pisząc:
"I'm very interested in stories like this. I've always been a Canon user, so I don't know if this is typical or not, but for a long time I've just had weird OOF focus, not really OOF, just soft. When testing the camera on a focus chart it's fine, but real life shots under a variety of conditions sometimes just don't live up to the promise. Worst case seem to be faces under indoor lighting. For me it could nothing, there are lots of reasonable explanations for my problems. Pure skin is hard to focus on, indoor lighting is a known problem, I like to shoot wide open, DOF might only be a inch or less. Lastly, I'm always shooting in minimal lighting, so slower shutter speeds.

I don't think you mentioned the size of the crop you displayed. Looks like it's 25%, 1/4th the size of the original. At F5.6 you should have plenty of DOF. That's kind of confusing, if the camera focused anywhere on the face it should be OK. Actually, if the camera missed the focus something should still be in focus, right? Just not where you expect it.

Notice that in every facial photo you could still see a single hair, only the sharpness of that hair varied. Remember, even with IS on how much subject movement does it take to blur a hair? It doesn't look like motion blur, but who knows.

Have you tried using the DPP software to overlay the focus points the camera thinks it's using? Perhaps the camera is picking bad focus areas, like smooth skin.

Your doing the right thing by trying to test and isolate it, even if the camera is simply defective it's good to learn. I would

(1) use a much higher shutter speed just to eliminate this
(2) try lots of objects w/hard edges (not faces, too many smooth areas)
(3) make sure you have lots of outdoor light

It's kind of frustrating because a quick review would say that these are all keepers when they're not. Good luck, and let us know.

(3) overlay the focus points"

Czyli najpierw elementarz - potem encyklopedia.

Od siebie dodałbym jeszcze wcześniejsze załatwienie potrzeb fizjologcznych - skutecznie poprawia poziom myślenia i koncentracji.

W 7d (jak i 1-dynkach) trzeba trochę pomyśleć, szczególnie przy wyborze trybu af.
Potem jest dobrze. 7d testowałem 2 dni. Pomiar strefowy rozłożył mnie całkowicie zanim nie pomyślałem po co Canon nam go daje. Wszystko miałem zmydlone. Do dziś nie potrafię go użyć prawidłowo. Nie winię za to C.
7d wezmę na 200 %. Af-spot przekonał mnie, że wszystkie moje szkła wyrabiają się bez problemu. Skoro zatem optyka mnie nie ogranicza to pozostaje zmiana sposobu myślenia o doborze pomiaru af (osiołkowi w żłoby ...)
Pozdrawiam Andrzej