Got this lens a week ago and just found time to get out of the house with it for the first time. Was flying my drone and decided to snap a few photos of it to test out the sharpness and background rendering of the new lens. So far I'm extremely impressed and the focus appears to be dead on with no adjustments needed. Can't wait to use this lens for some portrait sessions. No sharpening of any kind applied to these. Just some color correction and cropping. 1.) Taken at f/2.8. The grass behind the drone is probably only 10-15 feet away. 2.) Wide open at f/1.8. The tree line behind the drone is roughly 150 feet away.