When purchasing a goal, as there is always some variations in quality from one unit to another, one always wonders if "you're gonna get good." I am fallen. One can also think that for its L-series, Canon tightening the manufacturing tolerances. Nevertheless, the results are remarkable and even after treatment with exceptional DxO or Lightroom.
Moreover, stabilization is very effective to the point that it is the goal I have for low-light situations. Is pressed halfway down the shutter button and there, miraculously, nothing moves in the viewfinder. Impressive.