Protect the lens from wind, sand: Our lens hoods has some extent protect the lens from wind, sand, rain and snow, reversible design.
Compatibility: The dedicated lens hood is designed Fit for EF 17 40mm/0.7-1.6in, 17 35mm/0.7-1.4in, 20 35mm/0.8-1.4in Camera Lens. It can prevent the entry of non imaging light. Please check if the size is right before buying.
Notice: This Camera Reversible Lens Hood can prevent acci damage to the lens, and also prevent fingers from touching the lens by mistake. Please verify your camera's lens thread size before ordering.
Extra Design:It can avoid surrounding interference light into the lens in light photography or night photography.. During front light and side light photography, it can avoid surrounding scattered light entering the lens.
Protection: To prevent stray light from entering the lens. To protect the lens from impact. Not only can prevent acci damage to the lens, but also avoid touching the lens surface by mistake with fingers.