• Camera lens hood can prevent the intrusion of non-image light, avoid haze when backlight, side light, flash shooting • Avoid scattered light entering the lens while taking photos of front light and side lights • It can prevent the ambient interference light from entering the lens during light photography or night taking • It also protects the lens from scratches and fingerprints, preventing wind, sand, rain and snow to some extent • Widely used in backlight photography, commonly used to prevent glare