Sony ALC-SH0009 Lens Hood for Sony 11-18mm f/4.5-5.6 Wide Angle Zoom Lens Helps block unwanted light - Lens hoods are essential when taking pictures where the camera is pointing towards a strong source of light (i.e. the sun, spot lights) Protects the lens - Protects the lens when stood on a surface, in the camera bag, or when changing lenses - also helps to keep fingers away from the front of the lens Compatible - Lens hood for Alpha SAL-1118 lens Dimensions (Approx) - 4 1/4 x 1 1/2 Inches Weight (Approx.) - 0.7oz (20g)