What filters are commonly used in landscape photography?

Several types of filters are usually used in the scene:

CPL: Polarizer, this lens mainly removes reflected light, which can realize the interference of reflection during shooting and make the color more gorgeous. The lens can rotate, just like polarized sunglasses.

ND: reducer with numerical black lens. The larger the numerical value, the darker the black color will be, and the more light can be attenuated according to the numerical value. Lenses are divided into round and square, and square is better than round as a bracket.

In addition, there is another gradient type of nd, that is, the color gradient from the top to the bottom of the lens can reduce the brightness and contrast of half the picture. , mainly used in environments with horizontal lines, such as the seaside, such as shooting sunsets. This filter has other colors besides black.