How to maintain a digital camera?

First of all, the camera lens must not use any so-called glasses cloth, which is impossible. One more thing: the camera is a precision optical instrument. I hope more people can understand. LCD screen, you can use audition paper or absorbent cotton. It is recommended to stick a film on the LCD screen. The LCD screen can be lowered relative to the lens. Only special lens wiping paper (still low-level, not recommended), absorbent cotton, special lens pen and other professional auxiliary tools can be used to wipe the lens. Note: Before wiping, visible and invisible dust and impurities must be blown off with a blowing ball. The safest operation is given to professional and reliable professionals. Such as a camera maintenance technician. In addition, suede is indeed an exquisite and advanced wiping tool. It is sold in specialty store and the equipment market. Suede is divided into good, medium and poor because of the different leather parts and the quality of leather processing technology in the later stage. The market price ranges from 5 yuan to several hundred yuan. You can choose according to your own needs. Although suede is an advanced wiping tool, it can't be used to wipe the lens of the lens! ! Suede is dense and easy to hide evil and accept evil. Once used to wipe the lens, it will not become an "emery cloth" in a sense and angle. Suede is only suitable for wiping high-grade musical instruments, high-grade handicrafts, jewelry and high-grade chrome-plated metal surfaces (high-grade cars, yachts, etc. ), as well as the metal bodies of advanced cameras and classical collection cameras, but definitely not including the lens. Please pay attention. Lens coating, especially modern high-tech multilayer optical coating, is very easy to get hurt. I have also cleaned and maintained some lenses, and used suede, audition paper, lens pen, absorbent cotton and specially prepared audition liquid (not just naked medical alcohol) as required ... I have some feelings about this. Your problem is that your fingerprints are stuck. I suggest you buy a "lens pen" above 20 yuan, and apply it from the center of the lens to the outside of the lens by wiping with a spiral ring (similar to drawing concentric circles and spirals); Or buy a cleaning suit with lens water and mirror paper, which is also wiped by the above method, but be careful! Before wiping, it is best to blow off visible and invisible dust impurities with a soot blower.