From durability ABS this lens Guard effectively blocking unwanted light, the light shielding internal extinction To extend and the lens end, this Guard offering additional protections against accidental impacts, while allowing filter and lens shade access During forward and side light photography, scattered light from the surrounding area can be avoided from entering the lens The HB29 Lens Guard effectively blocks unwanted light from entering the lens, ensuring clear and vibranted photos without vignetting It can accidental damage to the lens and also fingers from touching the surfaces of the lens