What is the difference between UV filter and polarizer? What is the purpose?

The purpose is to improve the quality of scenery pictures. References are as follows:

1. Different functions

UV mirrors are for protection. UV mirrors are a kind of protective glasses, and their function is to filter ultraviolet rays. A polarizer is a filter used to photograph reflective scenes. Polarizers, also called polarizers, do the same thing. The filter is a colored lens used to filter the color of light. UV mirrors and polarizers are both filters. This is a polarizer.

2. Different uses

UV lenses are suitable for shooting in environments such as seaside, mountains, snowfields and open areas, and can reduce the blue tint caused by ultraviolet rays. In photography such as flower still life photography, polarizers are often used to take colorful photos. It is useful in landscape photography, flower photography, and shooting of certain highly reflective scenes. The picture shows the uv mirror.

Extended information:

1. UV mirror is usually used to protect the delicate lens coating. UV mirrors can reduce the blue tint caused by ultraviolet rays. It can also eliminate the interference of ultraviolet rays on the CCD, helping to improve the clarity and color effects. Due to the popularity of CMOS, the sensitivity to ultraviolet rays has been greatly reduced, so now the role of uv mirrors is getting smaller and smaller, and uv mirrors may sometimes play a negative role.

2. Polarizers selectively filter light from one direction or another. By filtering out most of the polarized light in diffuse reflection, it reduces the intensity of light in the sky, darkens the sky, and increases the contrast between blue sky and white clouds. Looking into the viewfinder, turn the front mirror. The effect is most noticeable when the sky is darkest in the viewfinder, with a difference of 90 degrees between darkest and most visible.

3. The filter plays a "seasoning" role. Flexible use of filters can improve the expressiveness of photography. In black and white photography, using filters can change the hue of the scene and make the photos more natural. In color photography, color filters are used to change the color temperature of a light source, the color of a subject, or a special visual effect.

4. Polarizer, also known as polarizer or PL lens, is a kind of color filter. The decolorizing function of a polarizer is to selectively vibrate light in a certain direction. In color and black-and-white photography, it is often used to eliminate or reduce strong reflections from non-metallic surfaces, thereby eliminating or reducing light spots.