The two I own:

EF 24mm f/1.4L II USM Autofocus Lens... anything over 2 that is in the middle of the DOF. Stay close to F/8 and the DOF is very forgiving.

EF 100mm f/2.8L Macro IS USM Lens...It is all sharp, but the lens is at its best between F/5.6 and F/11. Wide open it will vignette on a FF camera but it will be sharp in the center.



There is so much more that goes in to a picture sharp than the F stop, that with those lenses it is more important to master the other things. Shutter speed and camera shake will hurt you more than having your lens wide open.