The Sony ALCSH138.SYH lens hood is specifically designed for the SEL90M28G macro lens and provides essential protection against stray light and mechanical damage. This round lens hood features a compact design with an overall width of 94 mm and a depth of 55.5 mm, ensuring the portability of the lens while providing optimal shading. Made from durable black materials, it effectively prevents lens reflections and ghosting by blocking unwanted light from oblique angles, maintaining image contrast and color fidelity. The precision-crafted bayonet mount ensures a secure fit without compromising lens functionality or autofocus performance. This accessory is particularly valuable for macro photography applications, where precise light control is crucial for capturing detailed subjects. The matte black interior minimizes internal reflections, while the robust construction offers reliable protection for the front lens element against accidental bumps and environmental influences. Mounting is straightforward with a simple twist-lock mechanism that maintains proper alignment with the lens optics. When not in use, the lens hood can be reversed for space-saving storage, making transport in camera bags easier. This essential photo accessory enhances the performance of compatible Sony lenses by preserving optical integrity under various shooting conditions.