What's wrong with the photographic lens focusing ring sticking to your hands?

The main reasons why the photographic lens zoom ring sticks to the hand are as follows:
Oil stains and impurities: The lens focusing ring may be contaminated with oil stains or other impurities, causing it to stick to the hands. You can use cleaning agents such as cyclohexane to clean the focusing ring, remove oil stains and impurities, and wipe it dry after cleaning.
Improper use of lubricant: If too much lubricant is used on the focusing ring, it may cause sticking to the hands. It is recommended to use an appropriate amount of lubricant, such as WD40, and ensure even application.
Prevention and solutions:
Regular cleaning: Regularly use cleaning agents to clean the focusing ring, remove oil and impurities, and keep the lens clean.
Moderate use of lubricant: When using lubricant, pay attention to applying it in moderation to avoid excessive adhesion to the hands.
Keep dry: Ensure that the lens focus ring remains dry and avoid being affected by humid environments.
By using the above methods, it is possible to effectively solve and prevent the problem of sticking hands on the photographic lens focusing ring.