Hermann
Well-known member
There are many places in the world where you definitely need to clean your lenses regularly. Just use your bins on a seawatch with onshore winds for instance.I have some I have never cleaned! Some just a hit or two from canned air. If really dirty I just clean under the faucet then a hit or two from canned air.
BTW, be careful with canned air. You can get some nasty stuff on your lenses if you're not careful. There's a reason why most photographers just use a blower.
Hermann