So any one have any idea how hard it would be to scratch a lens? Also, would doing a cleaning maybe once every one or two months cause a lens to get scratched? And i am talking about a proper cleaning where you blow the dust off first and use lens tissue with lens cleaner until clean. Can this kind of cleaning really scratch a lens? Maybe i am obsessing over it but it must be harder than that to scratch a lens. I have a lens filter which i should use, but it has a scratch on it and i just bought it. (The scratch can only be seen if you pass a light over it). So can a lens really be easily damaged by a proper cleaning?