Reduces glare caused by light that directly affects the front lens, while also protecting the lens itself from accidental bumps and weathering Stops intrusive bad lighting, which is light that is not required by the camera’s sensor to take photos, but rather comes from outside of the field of view in frame Helps avoid lens flare, which is what occurs when photographing in front of a light source, causing polygonal, circular or linear halos to appear ET-74B Lens Hood Shades the lens from stray light Keeps moisture or wind-blown debris from the lens Protects lens barrel from knocks and light drops 1 x Canon Lens Hood