​"Mold that breeds in a humid environment is the most harmful to photographic equipment." Xiong Wen, the owner of Chengdu Bainaohui Computer City, who has been engaged in digital products for a long time, said, "Now the lens surface of the lens is coated. This coating is very delicate. Once mildewed, mold will produce punctate or filamentous mildew spots on the surface of the lens, which will affect the transparency and imaging performance of the lens. In severe cases, the lens will be scrapped; If photographic equipment is kept in a humid environment for a long time, its internal electronic devices will be damaged, which will accelerate the aging of integrated circuits and affect the life of display screens. Therefore, in the humid spring, it is necessary to do a good job of moisture and mildew prevention for photographic equipment. "