The addition of a lens hood can help prevent flares-those circles of light that can accompany images where a strong light source is just outside the frame. - Professional tulip shape design (also known as 'flower' or 'petal' shape) allows for greater versatility. Perfect for standard or zoom lenses. - Easy to use screw mount lens hood screws right onto your lens or filter. - Features a rear locking ring to allow user to rotate the hood in either direction and capture the exact amount of shading desired. - Lens hoods also have the added benefit of providing extra protection to your lens from accidental bumps or scratches. - Hard rubber lens hood for an extremely solid and lightweight feel. Specifically designed for a tight and secure fit. No wobbling or cross-threading. - Lens hoods are one of the most important accessories you can purchase to improve the quality of your photos, and usually the most overlooked by beginner and amateur photographers.