Hood is set in front of the camera lens used in photographic accessories.In the light and side light photography along, to avoid scattering light into the lens around. In light photography or night photography, to avoid the interference of light into the lens around. In the backlight, side light or flash photography, it can prevent the entry of non-imaging optical, to avoid the fog. This Nikon Lens Hood can prevent accidental lens injury, also avoid finger inadvertently lens surface, but also to some extent for the lens block sand, rain and snow. Hood is widely used in backlighting photography, generally avoid glare. However, if the light from the past, is still possible glare.Time to enjoy the benefits this Camera Lens Hood brings!