First of all, it is very necessary to install a UV mirror in a SLR camera. UV mirror is anti-ultraviolet and has the function of protecting the lens. After all, lenses are expensive and UV mirrors are cheap. UV mirror can prevent your lens from being scratched and corroded by rain or acid.

Some people say that ultraviolet rays have an effect on image quality. There are only two kinds of people. One is a novice who doesn't understand these practical uses and effects, and the other is an experienced player. They have all played with these objects, and a set of theories that have been tested in practice will have a subtle influence, but it will not affect a novice. Because the field we set foot in is not deep enough, it can be said that it has no impact. You will understand these things when you are familiar with your machine. The effect of high-grade and general domestic high-quality (recommended green leaf brand) uv mirrors is similar.

I suggest you buy a cheap and high-quality domestic UV mirror (recommended green leaf brand) which has been installed on it as a protective mirror. The so-called influence on focusing speed will theoretically affect your actual operation, but it will not affect your actual operation.

If you shoot scenery, buy a good polarizer (polarizer), which can darken the color of the sky and make it more transparent. Give it a try.

Taobao online domestic green leaf brand, there are many imported Ken and so on. But I still recommend you to buy domestic green leaf brand Uv and polarizer, about 25-30 yuan/piece, because many so-called imports are fakes.

I hope it is useful to you, hehe!