[herbertau]

急救Coating!
支鏡Coating比我抹花咗,請問各位師兄有咩方法補救或減少花痕呢？多謝!

[rankinelo]

The best is to do nothing... as long as it doesn't affect the final image formation...

[lokism3]

Right! you can't do anything on it.
Maybe you can try to replace one from the manufacturer,
if you want to sell it. but it is nearly impossible or very expensive.
Learn from this experience!
Think about:
why clean the lens directly?
is it necessary to clean?
using what to clean?