My 50mm has stopped focussing
any ideas?
tried wiggling it when attaching to clean the contacts, tried jiggling the af/M setting on the lens, it hasn't been dropped, brit has been attached to a whatchermecallitt, close up thingy, not a TC just the Canon 12mm spacing thingy whoojamaflip, for a month approx, sitting in the bag ( rarely use this lens)
is it Mr Repairsville or is there some trick I need to try

- but I decided to wait until I heard from you experts 
