Many of you may be like me a few months ago having never carried around a LensPen. These days, it’s hard for me to even recognize that foolish person.
Seriously though, if you shoot while traveling, this thing is amazing and by far beats any dry microfiber cloth for cleaning lenses of fingerprints and smudges. The tip is a chamois-cloth type material with carbon black, and it’s rather magical. I use it all the time for my m43 lenses and X100s. It also does a great job on my iPhone 5S which constantly picks up prints, although it will leave some carbon on the metal.
A single pen is about $10 and I’ve been using one I picked up in Taipei back in February that seems to still be kicking. You can also buy a multi-form factor pen pack for $15.
This is one of my “must have” pieces of gear when I’m traveling or walking around.