What is the role of the SLR's UV mirror?

First, protect the lens.

The lens in the camera is the most precious, so we should strengthen protection. Installing UV lenses can prevent some dust erosion, and of course it is very convenient to wipe, so don't worry about rubbing the lenses. The lens receives light when taking pictures, just like people look at objects. Seeing things in strong light makes you uncomfortable and tired. So you put on color filter glasses, and your eyes feel much more comfortable. That's because the lens blocks some strong ultraviolet rays and allows your eyes to accept external things under negative conditions.

Second, filter the light.

The UV lens on the lens can effectively prevent the invasion of strong ultraviolet rays from making the image clear, and secondly, it can prevent some air pollution from corroding the lens. Adding a UV mirror in front of the lens can effectively filter ultraviolet rays and improve the clarity of photos. For mountain photography, aerial photography can make the distant scenery clearer and restore a more realistic and gorgeous picture. UV mirror can not only improve imaging, but also protect the lens from dust, fingerprints and other pollution. Therefore, UV mirror has become the most widely used color filter.

: ultraviolet mirror

When purchasing a UV mirror, it should be noted that the installation of the UV mirror can not produce a color cast effect on the photos taken in normal environment, and the wide-angle end, especially the telephoto end, can only be clearly focused after the camera is equipped with a filter.

Ordinary UV mirrors are double-sided and single-coated, and the light transmittance is about 96%. In addition, there are multilayer coated MC UV mirrors. Due to the adoption of multi-layer coating technology, the light transmittance reaches 99.9%, which is much better than ordinary UV lens, so the characteristics of the original lens can be completely retained.

It is impossible to equip a home stupid machine with a UV mirror, only the lens of a SLR camera is equipped with it. Just screw the thread in place.