For those adventurous photographers battling man-made and nature’s conditions, plastic lens caps won’t do the trick. LockCircle comes to the rescue with an aluminum body cap that clamps onto your unit like the jaws of a pit bull, guarding it from the elements. The heavy duty machined steel provides extra protection, while the knurled edges allow an extra strong grip. Like when you’ve got gloves on from your photographic skiing expedition in the Himalayas. They come in silver, black and titanium. Retails for $99 and currently available only for Canon, though Nikon fits are on their way.