The Sony ALCSH181.SYH lens hood is a specialized accessory for the SEL400800GW telephoto lens that provides essential protection and enhances optical performance. This standard black lens hood effectively reduces lens flare and ghosting by blocking stray light that enters the lens at oblique angles, ensuring optimal image contrast and color fidelity under challenging lighting conditions. Made from durable, lightweight materials with a matte black interior finish that minimizes internal reflections, this lens hood securely attaches to the lens via a bayonet mount system. Its petal shape optimizes shading with minimal vignetting across the entire focus range, making it particularly valuable for wildlife, sports, and landscape photography, where lens protection and image quality are crucial. With a diameter of approximately 15 cm and a depth of 12 cm, this accessory maintains a compact profile that does not interfere with lens handling or storage. The robust construction ensures long-term durability, while precise manufacturing guarantees perfect compatibility with the SEL400800GW lens optics. This lens hood is an essential addition for photographers looking to maximize the performance of their Sony telephoto lens system in various shooting environments.