What's the difference between a uv mirror and a polarizer? It is said that ultraviolet rays only play a protective role. But I saw in a street that all kinds of uv mirrors can protect against ultravio

What's the difference between a uv mirror and a polarizer? It is said that ultraviolet rays only play a protective role. But I saw in a street that all kinds of uv mirrors can protect against ultraviolet rays. UV and polarization have different functions.

UV mirrors can filter ultraviolet rays and are often used in landscape photography. Simply put, it can filter the foggy feeling brought by ultraviolet rays. Of course, a good UV mirror has a good filtering effect. Dozens or even hundreds of cheap UV mirrors are generally not recommended, which will not play a filtering role and will reduce the sharpness of the lens.

The polarizer can shield the reflected light from non-metallic surfaces under certain conditions, such as the reflection from glass (effective when the angle between the lens and the glass is not 90 degrees). In addition, in the case of smooth light, polarizers can make the sky bluer.

Anti-glare and anti-ghost rely on the layer of lens glass to weaken the reflection inside the lens. It's nonsense to use UV mirror to prevent glare and ghost.

If you buy a UV mirror, it is recommended to buy a UV of more than 1000 yuan. You don't need to take it off except when shooting fog scenes.