First of all, it is very necessary for SLR cameras to install UV mirrors. UV mirrors are UV-resistant and also protect the lens. It has a protective effect on your lens. After all, lenses are expensive and UV mirrors are cheap. UV mirrors can be avoided. Protect your lens from scratches, rain or acid corrosion.

Some people say that UV has an impact on image quality. There are two types of people. One is novices who do not understand these actual uses and functions and just hearsay. The other is senior players who have played with these objects. A set of theories tested in practice will indeed have a subtle impact, but it will not affect a novice because the field we cover is not deep enough, so it can be said that it has no influence. You will understand these things after you are familiar with your machine. The photo effects produced by high-end and general domestic high-quality (Greenleaf brand recommended) UV mirrors are similar.

I recommend that you buy a cheap and high-quality domestically produced high-quality (Greenleaf brand recommended) UV mirror and keep it installed. It is used as a protective lens above, and the so-called impact on the focusing speed will theoretically affect it but will not affect your actual operation.

If you take pictures of scenery, buy a good polarizer (polarizer). This thing can darken the color of the sky and make the color of the sky more transparent when taking pictures of scenery. You will know after you try it.

There are many domestically produced Green Leaf brands on Taobao, as well as imported Kengo brands. But I still recommend you to buy domestic Greenleaf brand UV and polarized lenses, which cost about 25-30 yuan/piece, because many so-called imported ones are counterfeit.

Hope it is useful to you, haha!