Of course, lens paper is cheap and easy to carry, and many color friends like to use it. But the usage of lens paper is not clear.
The correct usage of lens paper is:
Fold the lens paper in half, tear it from the middle (note that it is torn, not cut, in order to have that stubble), then fold it in half and tear it again. Until the size is almost the same, align the stubble ends of many tear pieces, then fold them in half or roll them up 90 degrees several times with the aligned ends, and then wipe the lenses with the stubble ends. Be sure to rub it from the middle of the lens to the edge, clockwise or counterclockwise, and don't rub it back and forth. In addition, after wiping the lens paper, throw it away, and don't start from the middle. Please make another one if necessary. To avoid the dust on the lens paper scratching the lens.
The paper used to wipe the lens of microscope is the same as the lens paper of digital camera. You can wipe it according to the above method.