Nikon HB-32 Flower Type Lens Shade for 18-70mm DX Nikkor Lens Petal-shaped lens hood Designed for the Nikon 18-70mm f3.5-4.5G ED IF AF-S DX Nikkor Zoom Lens Deflects oblique light angles that often cause flare effects Helps protect front of the lens scratches and dings while shooting Petal shape avoids vignetting that can occur round lens hoods