Lens accessories are additional tools that enhance the functionality and performance of camera lenses. Common types include filters, which can protect the lens or modify light entering the camera, and lens hoods, which reduce glare and improve contrast. Other accessories include extension tubes for macro photography and teleconverters that increase the focal length of a lens. These accessories can significantly impact the quality of photographs. For instance, using a polarizing filter can help reduce reflections and enhance colors, while a UV filter can protect the lens from scratches and dust. Overall, lens accessories are valuable for photographers looking to expand their creative options.