35mmdelux
Veni, vidi, vici
carefully.
blower and microfiber if needed. Very safe with modern glass and coatings.
it only makes sense to clean your lenses if:
1: you get one second hand that is desperately dirty
2: you wanna sell a lens
3: you drop the lens in some kind of serious gunk. Or your dog licks it.
"Clean with an Old clean 100% cotton T-Shirt"
I remember reading years ago about a fellow who was really into car detailing. I think the article was in Road & Track. Anyway, this guy wanted to find out which type/brand of soap left the least residue on the car's finish. So to test things he used the soap to clean, believe it or not, his contact lenses. The contacts were of the hard type, but it always did strike me as a bit extreme. Ivory Liquid left no residue.
The only things that leave no residue are things that evaporate completely (pure naptha, pure alcohol, distilled water, and etcetera). Ivory soap doesn't evaporate completely. Maybe it leaves a clear residue, or a unnoticable residue, but it doesn't leave no residue.
1.) use a handblower on all glass surfaces--NOT compressed air
2.) dip Q-tip in pure Acetone and wipe in a circular motion w/ one end
3.) dry w/ the other end
4.) repeat 2 & 3 w/ another Q-tip
5. repeat 2, 3 & 4 using one qt. distilled water w/ a drop or two of liquid dishwashing detergent
6. admire your work
7.) do the above as little as possible!!!!!!!!
NEVER use a microfiber cloth--too many cheapo/ fake ones on the mkt.