Originally posted by tom1803 One warning regarding the use of artist's brush.
These brushes usually contain some glue and oil residue from the factory, even when brand new. Make sure to wash and clean the brush THOROUGHLY before getting it anywhere near your lens. Otherwise, you may get rid of the dust but end up with smear marks that'll need further cleaning. If you have an old, coated filter test the brush on it first.
Good point. I should get the lens pen and use its retractable brush.
Kudos to altopiet for his Mythbusters-like approach. I am not allowed to try it at home....
Seb