Either I was very very lucky, or the lens is frightened by a tripod, but the autofocus miss, especially on a large hole, IMHO, is not a problem for the lens, but for the photographer. When shooting handheld, it is very difficult to keep the camera completely still, and given the depth of field equal to 1-2 centimeters with a large hole, the shift of the camera in the gap between focusing and the picture itself gives the very miss. A shift of 1-2 centimeters is almost not noticeable by the photographer. And here is where the photographer will pull, either back or forward. All lenses cannot be defective, before scolding the glass, check the curvature of the hands
Canon EF-S 17-55mm f/2.8 IS USM Lens - Compatible with Canon DSLR Cameras (Lens Only)
73 Review
Black Canon EF 24-105mm f/4L IS II USM Lens - Model 1380C002
78 Review
Canon EF 50mm f/1.8 II Fixed Lens - Discontinued by Manufacturer
93 Review
Nikon 50mm f/1.8D Lens: Perfect for Nikon DSLR Cameras!
97 Review