So I left my camera in my car for a couple hours today in freezing temperatures which caused my filter to break. Although this doesnt seem to have hurt my lense, it left some little fragments/glass dust on the lense. Although they didnt show up on any of the pictures I took today Im worried they might show when I use a closer focal point and probably arent the best things to leave on the lense for an extended period of time. Anyone have any ideas as to how to clean off the lense, it seems like just wiping it off with a lense cloth could cause the little pieces of glass to scratch the lense, but I dont have any other ideas.