Why does pointing a general camera at a strong light source (such as the sun) damage the lens?

Because long-term direct exposure to strong light will cause the CCD sensor to be burned due to excessive exposure. As for the lens, it is also harmful, because the current lenses are all coated spherical lenses. Strong ultraviolet light will cause aging and discoloration of the coating. But before the lens was damaged, the ccd had already burned out.

If you often shoot under strong light, it is recommended that you add a UV filter, filter, etc. Professional photographers generally use it when dealing with strong light.

It can protect your lens and camera. But you still can’t let the camera work under strong light for a long time.