The best way to clean a lens is to use blower brush to simply blow or brush away loose dust. To remove dirt, smudges and other oily stains, use a piece of lint free lens cleaning tissue and a small amount of third-party lens cleaning solution. Place a drop or two of cleaner on the tissue (never directly onto the lens) and then wipe the lens in a circular motion working from the centre to the edge of the lens, removing any marks or smears.
If the above supplies are not available a clean, dry, soft, lint free cloth can be used to clean the lens. The same method can be used to clean the viewfinder eyepiece of Nikon cameras.
Always refer to your product's user manual for complete information.
If there is dust or dirt on optical surfaces inside the lens, the lens will need to be returned to a Nikon service centre for cleaning. There maybe a charge for performing this cleaning due to the amount of labour regarded.
Please contact your local Nikon service centre for more information.
