Is this actually what I should expect from my Canon 70-200/2.8 IS II?

[Mitch.Conner]

Couldn't sleep. That's nothing new though - I don't want you all to think it's related to this.

I understand your predicament, but if you're finished shooting test charts, don't let yourself be detained and get out, shooing something alive ...

... crawling around the frozen scenery during a full moon night, shooting wildlife will help you worry less about pixel sharpness and make you sleep when you return home, you've got my word on that

Note: Sorry to spam the place with horsie shots, it just seemed appropriate here somehow :-o

+1

Ordinarily I don't pixel peep. This is pretty much a first for me.

The photos at infinity focus seem to confirm that there's a problem. Even just the fact that it isn't holding its focus when moved (even though it remained at infinity focus and was back at the same position that it was focused from ) is concerning. It makes me wonder if something is not only decentered, but loose.