Till now I only use my dust blower, but increasingly I notice some unidentifiable smudges on my lenses/filters that are irritating the @#$% out of me.
So am considering cleaning my lenses - some questions:
1. How often do you guys clean your lenses?
2. What do you use? Lens Pens? Micro-fibre cloths? Cleaning solution?
3. What brand of cleaning solution is good?
4. Where do you buy your cleaning solution?