I can‘t order anything, but my lens has so many smudge marks on it, I have microfiber cloths, etc, but I read they contain things that might damage it, I actually used my shirt several times. Any ideas?
You need special cleaning equipment for that lens. A lens pen or lens paper maybe. If the lens does not have a UV filter on it yet, it would also be a good idea to get one now.
U probably used a shirt with cotton, which easily leaves fibers behind. Microfiber is made from a combination of polyester and nylon, and it has many more pockets to hold dirt than cotton. Microfiber, as long as there's no debris in the fiber, will not harm your lens. Thus, you should have a clean microfiber to start off with. That means, you either get a new microfiber cloth or you launder the old one. When laundering, do not use bleach or fabric softener and do not use water above 200 degrees Fahrenheit (i.e. use warm water not hot water). Do not wash with fabrics that give off lint (i.e. don't wash with your cotton t-shirt) or the fabric will pick up lint in the wash. Air dry it. Now, after the microfiber is cleanfirst blow on your lens to remove any large, loose particles that could scratch, being careful not to spit on the lens. Next, exhale on the lens--when you exhale, you give off water vapor and carbon dioxide, with trace amounts of other chemicals (not enough to harm the lens coating). Begin wiping the lens element in a circular motion, exhaling again if you need more water vapor. That should get the smudge off and you didn't have to buy anything.
