did u use the lens cleaning kit?
normally there are few stuff incide the kit..

blower, a little piece of microfiber cloth, cotton swabs,lens cleaning paper and a bottle of chemical water to clean the lense..

follow the instruction from the kit, i think it helps..(but normally i dun apply the chemical stuff on the lens, it might harmful to lens i heard)

RM 35 per set at lowyat..hehehe..

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Added on February 1, 2009, 8:16 pm
Bro..i think vignet is the main issue if we put in the lens adaptor/filter..
no matter what size it is...

my freind also told me the same thing....he say...unelss i buy an expensive filter..it might decrease the issue but it will not stop it from happening.

I am yet to get the adaptor kit ..will post up some photo once i got it..