Final answer:
A UV filter not only protects the lens but also blocks ultraviolet light that can cause haze in photos.
Step-by-step explanation:
In addition to protecting a valuable lens from damage, a UV filter also blocks ultraviolet light, which is not visible to the human eye but can appear as haze in landscape photos. The UV filter acts as a barrier, reducing the amount of UV light that reaches the camera sensor. This helps in improving image quality and reducing the haziness caused by UV rays.
Learn more about UV filter's purpose