Sony ALC-SH166 Lens Hood for FE 40mm f/2.5 G Lens and FE 50mm f/2.5 G Lens For FE 40mm f/2.5 G and FE 50mm f/2.5 G, Blocks Stray Light from Entering Lens, Prevents Lens Flare, Protects Lens from Impact LENSES-Lens Hoods