New Dedicated (Bayonet) Camera Lens Hood for:Canon EF-S 17-85mm F4-5.6 IS USMCanon EF-S 18-135mm F3.5-5.6 ISDesigned specifically for Canon lenses. Equivalent of the EW-73B model lens hood.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 bayonet mount attaches to your lens for a tight and secure fit. Just twist on or off. No wobbling or cross-threading.Handy reversible design allows you to attach the hood in reverse for easy storage in your bag.Lens hoods also have the added benefit of providing extra protection to your lens from accidental bumps or scratches.Made of high impact plastic for an extremely solid and lightweight feel.Backed with SynergySales 60-Day 100% Satisfaction Guarantee.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.Dedicated Lens Hood Only.