The sencel count is very average but the reputation
of
the lens — I don't know it myself – stands its ground.
So, my conclusion for the lack of critical focus includes…
- a visible blur possibly due to head or shooting technique and
- an AF Fine Tune that is not as perfect as it could be — I don't
know canon so I don't know what is possible.
The addition off both render that result where you're on the way
to something very cool when the two issues are solved.
Very important to me: your WB is very pleasing!