Acetone is about the best glass cleaner around. But you must avoid touching the plastic or black paint around the front element.
Andre
I would not guarantee it wouldn't remove the lens coating also. -- graywolf
Acetone won't affect the coating. Acetone is said to be the best glass cleaner in modern optic books. Here is one specific mention that acetone won't affect anti-reflection coatings:
Talking about their Schott glass, Jensen (distributor of Durst in North America) says:
"... to remove any tape residue later you can do so using de-natured alcohol, acetone or Methol-Etyl-Keatone (MEK). I will not damage the glass or the AR Coatong."
Acetone will leave less residue than rubbing alcool, but "polishing" after breathing on the lens will clear it.
Andre
