Feature: 1. IMPROVE IMAGE SHARPNESS: Improve image sharpness and color reproduction. Prevent unnecessary light from entering the image. Matte finish inside to reduce reflections and ensure effective shading. 2. PROTECTIVE LENS: Avoid accidental damage to the lens, it can also prevent fingers from accidentally touching the surface of the lens, and to some extent it can block wind, rain, snow and so on. 3. HIGH PERFORMANCE: The function of the hood is to suppress stray light from entering the lens to improve image sharpness and color reproduction. In light or night photography, you can avoid the surrounding interference light from entering the lens. 4. BUILT TO LAST: Made of premium aluminum alloy, the lens hood features a good matching appearance with your camera, maintaining the aesthetic of the lens and camera system. 5. CAMERA LENS ACCESSORIES: The use of hoods is both a means to improve image quality and a good professional habit and literacy of a strict photographer. This lens hood is designed for a 37MM lens. Specification: Item Type: Square Lens Hood Material: Aluminum Alloy, ABS Caliber: 37mm / 1.5in Front Cover Size: 49mm / 1.9in Suggested Focal Length: 25mm / 1.0in and above. Package List: 1 x 37mm Lens Hood 1 x User Manual Note: To avoid vignetting, this lens hood is not suitable for ultra wide angle lenses below 18mm focal length. It is recommended to use a 25mm wide angle lens with this lens hood.