Ah, the Japanese. Always good for a crazy invention. This time, they’ve come up with infrared-LED-equipped glasses that help to circumvent face detection. When (knowingly or unkowingly) photographed, the near-infrared light that the glasses’ built-in LEDs emit will be registered by most cameras’ sensors and cause the eyes-and-nose-part of the face to appear washed out, while the light is invisible to the human eye. While privacy is indeed a concern now that CCTV cameras are recording every movement especially in crowded public places, these particular glasses do make you look a bit of a dork, to be honest. But then again, that will probably go mostly unnoticed on the streets of Tokyo … (or those of New York, for that matter.)
In Nikon’s support forums, there is an inquiry about how to clean camera lenses. And apparently, Nikon states that you shouldn’t breathe on the lens because your breath contains harmful acids that could damage the coatings. According to the statement:
“How do I clean the camera lens?
The best way to clean a lens is to use a piece of lint free lens cleaning tissue and a small amount of Lens Cleaning solution. Do not use anything containing abrasives or solvents, only use Lens Cleaning Solution.
First we recommend taking a small blower brush to blow off or brush away loose dust or debris.
Next, place a drop or two of cleaner on the tissue (never directly onto the lens) and then wipe the lens in a circular motion, beginning in the center and working your way outward, removing any marks or smear.
If the above supplies are not available a clean, dry, soft, lint free cloth can be used to clean the lens. Do not breathe on the lens to fog it for cleaning. There are harmful acids in breath that can damage lens coatings. Just use the blower bulb, then brush, and wipe the lens in a circular spiral from the center outward.
The same method can be used to clean the viewfinder eyepiece of Nikon cameras.”