This is because CPL filters allow you to control the amount of light entering your camera lens, which can affect the way colors appear in your photos. By using a CPL filter, you can adjust the amount of light entering your camera lens, making the colors in your photos look more vibrant and saturated.
Another benefit of using a CPL filter is that it can reduce glare and improve image sharpness. This is because CPL filters can reduce the amount of light that enters your camera lens at an angle, which can cause glare and reduce the sharpness of your photos. By using a CPL filter, you can eliminate this harsh direct light, which will help improve the sharpness and clarity of your photos.