First, use a lens pen only on lenses. Do not attempt to use this on your CCD or CMOS camera sensor. It is too harsh and can permanently damage your camera’s sensor. You should avoid placing anything inside your camera to clean the sensor unless you absolutely know what you are doing.
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As previously stated, the lens pen has two ends. The first is the retractable brush, which comes out with by sliding the switch on the side of the pen. Use the brush to gently brush dust away from the center of the lens. There is no need to press hard as you are only lightly sweeping away the larger particles that could scratch the lens.
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The other end is the special Lens Pen cleaning pad. It has a special cleaning compound that promises not to spill or dry out. It is also “self replenishing” by replacing the cap and giving the cap a half twist. I’m not sure how the mechanism inside or the compound works but I can say it can take off some stubborn residues and oils on the lens (including fingerprints). The correct way to use the Lens Pen is to remove the cap and use smooth circular wipes on the lens surface. If smudges persist, use your breath on the lens surface and repeat the cleaning with the Lens Pen.
Photos by: .dr4gon
