I bought this lens last June and I barely used it. Yesterday I noticed a spec of dirt in the lens. It's annoying cause I'm extremely careful with my lenses. What should I do, can I get this cleaned anywhere? Would that cost almost the same money of buying a new lenses? Is it going to affect the lens and the pictures? Please help. Thank you.
The cost of dismantling , cleaning, re-assembling, and collimating in a 'clean room' is several hundred pounds. It is very likely that the spec will not show in any of your photographs. A gentle bump may shift it; but it may come back for the same reason!