Slight gap movement Nikkor 20mm 2.8 Hey, Unfortunately we can’t enclose video on this sub so i’ll try to explain my doubt in detail : Ive recently received a second hand nikkor 20mm 2.8. I’ve noticed a slight gap movement between the front element (the part that is moving when focusing) and the body. That gap is in the axis of the body. Is this someting usual and shouldnt be a pro…