I just picked up the Canon 50mm 1.4.
When I'm manually focusing and reach the far end of the end focal length, the ring still turns- but a little stiffer, like it's "sliding" over something.
I usually don't notice it at first. I'll be focusing on something, turning the ring clockwise, when I notice that it's still turning but I've reached the end. On my old Minolta lenses the ring stops when it reaches either end of it's focal length. My Canon 28mm 1.8 doesn't do this...
Is something wrong with my lens?

