1. Situations that are likely to cause damage to the lens
Shooting in areas with a lot of wind and sand
After shooting, the lens should be cleaned well. It is possible that some dust will enter the inside of the lens and bond with grease, causing mechanical parts to wear.
high humidity areas
Mold likes a humid environment. If the lens is moldy, the mold spots are usually deep, and it is very troublesome to deal with.
In a relatively humid environment (such as the south), it is best to store the lens in a moisture-proof box to prevent mold.
If there is no condition, put a desiccant in the lens case.
Avoid blowing directly from the air outlet, and do not blow the lens with a hot air gun. It may cause the failure of the adhesive glue in the mechanical part or the glue in the glued lens, and the lens will be unevenly heated and cracked.
low temperature environment
Different lenses have different optimum working temperatures. If you shoot at a place lower than minus 20 degrees, you need to replace the lubricating oil. Otherwise, if the temperature is too low, the lubricating oil will become very viscous.
It is very cold outdoors. After taking the lens indoors, it is best not to use it immediately. It needs to stand for a while, otherwise condensation may form inside the lens.
high temperature environment
Avoid direct sunlight, cover the front and rear covers at different times, the grease on the lens will react quickly, clean the shell frequently to avoid the growth of microorganisms.
Problems with focal length equipment
The focus and aperture limit of some lenses are not stable enough, and the limit may break or fall off. In this case, it is recommended to adjust the strength of the focus motor.