There are different opinions about the storage humidity of SLR lenses. Moistureproof box's instructions say it's 35-45 degrees, and online teachers say it's 45-55 degrees, 55-60 degrees. How many degr

There are different opinions about the storage humidity of SLR lenses. Moistureproof box's instructions say it's 35-45 degrees, and online teachers say it's 45-55 degrees, 55-60 degrees. How many degrees! thank you Mold growing in humid environment is the biggest enemy of camera equipment. There is a coating on the lens surface of the lens, and mold decomposes the components of the film on the lens surface, resulting in punctate or filamentous mildew spots, which affect the transparency and imaging of the lens and even lead to the scrapping of the lens in serious cases, so mold is the biggest killer of camera photographic equipment. Besides mold, humidity is also a potential killer. When the camera equipment is in a humid environment for a long time, the electronic devices inside the camera equipment will be affected, which will accelerate the aging and affect the service life. Therefore, it is necessary for cameras, lenses and other equipment to do moisture-proof and mildew-proof work. From the growth and development conditions of mold, it can be seen that the effective protection method is to destroy the living conditions of mold for articles vulnerable to mold attack, that is, storing articles in an environment with relative humidity below 60% or temperature below 10℃ can prevent the growth and destruction of mold. Because of the high energy consumption of controlling the temperature for a long time, the protection focus falls on controlling the moisture in the air. Scientific research has proved that if the metal is stored in an environment below the critical corrosion value, the corrosion rate will slow down, and the more the environmental humidity drops, the slower the corrosion rate will be. For example, if the relative humidity of the storage environment drops to 30%, the electrochemical corrosion process cannot be carried out because of the low humidity, and the corrosion of metals can be completely stopped. It can be seen that the storage safety of most items can be guaranteed by paying attention to controlling the environmental humidity and controlling the relative humidity of the environment at about 40%. In order to achieve this goal, people have adopted many methods to remove water, and moistureproof box storage is one of them. Generally, maintaining a relative humidity of 30 ~ 40 is conducive to the preservation of precision instruments. Of course, this standard is also applicable to cameras and lenses.