I had previously made a post a few weeks ago questioning the sharpness of the lens. It just wasn't what I expected but I eventually came to terms with it and blew it off as user error.
After reading another post about someone taking their filter off to reveal a much sharper image I decided to take my $20 dollar Hoya filter off of my 70-200 L to give it a shot. I took the lens to the pool to shoot the family as they swam.
When I got home to look at the images it finally happened. The sharpness of the images took my breath away and was replaced by "L" This is what I expected out of this lens. An amazing piece of equipment.
Lesson learned - don't use crap filters.
100 percent crop