For wiping away dust and occasional smudges and fingerprints on a digital camera lens and viewfinder,
many photographers use a pen-like cleaning system.
Lens cleaning pens are effective, easy-to-use and fit conveniently into most camera bags or a shirt pocket.
Lens pens, which are available in a few sizes and in kits,
typically have a retractable brush on one end to brush away dust and particles of dirt.
Removing the cap from the other end of the lens pen reveals a circular pad.
The pad, made of natural chamois, is embedded with a non-liquid compound that very effectively removes smudges and smears.
The cleaning element never dries out and is safe to use