Teacher, what do you think about the purchase of UV mirrors?

With the approach of the Spring Festival, the number of users who buy SLR or micro-orders is gradually increasing. After buying your beloved camera, it is more important to take good care of it. On second thought, I think it's safer to buy a UV mirror. I'm very picky about this glass. I was fooled by JS accidentally. How to buy? Still have to listen to some people's opinions:

First, whether it is good or bad can be seen at a glance. For the owner of the video store, you will be very happy to hear that you want to buy a UV mirror. Because he may only earn tens of yuan for a camera, but he can earn hundreds or even more for consumables like UV mirrors. After the boss introduces a lot of brands and technical terms that you can't understand, you may be a little confused. In fact, judging the quality of UV mirror is very simple. Under the black background, take the UV mirror as a mirror, if you can see your clear face, hehe! Congratulations, don't buy this UV mirror! Unqualified. The clearer the shadow, the worse the lens and coating. This is a piece of glass. If you can't see anything on a black background, that's the UV mirror you bought. Because of the high transmittance of the lens, almost all the light passes through and is basically not reflected, so nothing can be seen. Then you can discuss the price with your boss.

Another trick: in addition to light transmission, UV mirrors are also divided into many grades, such as optical glass and coated. The method of identification is simple. If there is purple or blue light on the mirror facing the light obliquely, it is coating. There is also a more Jianghu way, that is, put the UV mirror between the money detector and the paper money. If the fluorescence brightness of paper money is normal, then the UV mirror has no function of filtering ultraviolet rays; If the fluorescence brightness obviously darkens or even disappears, then this piece of UV is very helpful for filtering ultraviolet rays.

1. Several signs about UV mirrors: n: ordinary glass (as the name implies) o: optical glass (which can effectively filter ultraviolet rays and greatly enhance the light transmittance) MC: single-layer coating (which can greatly reduce the reflection of monochromatic light (usually green light) and enhance its light transmittance) HMC: multi-layer coating (which can reduce the reflection of polychromatic light and enhance its light transmittance) To sum up. 3. ultraviolet (HMC); 4. ultraviolet (o); 5. Ultraviolet (O) (MC); 6. ultraviolet (HMC)

Second, what price should I buy a UV mirror? UV mirror is an accessory product, it is an ultraviolet filter, because too much ultraviolet light will affect the imaging quality. Its main function is to protect the lens (dustproof and scratch the lens, etc.). ), while playing a filtering role, such as the impact of ultraviolet light on imaging. For example, in the seaside, mountains, snow fields and open areas, ultraviolet rays will lead to the blue tone of the pictures taken, and a good UV mirror will weaken this effect. Don't underestimate this small piece of glass, the price ranges from 30 to 40 yuan to thousands of yuan. For newcomers to buy UV glasses, one of the most concerned questions is, which price is more suitable? On this issue, let's listen to the opinions of several experts first. 1, Kobayashi (a famous young photographer): 200 yuan is enough, and 100 yuan is not considered. Buy the best, make a one-time investment within the range you can afford, and feel more at ease. 2. Xue Xin (commercial photographer): According to my own economic strength, I suggest buying something at the price of 150 yuan ~600 yuan, but if it is more expensive, burn it a little. 3. Corning (Macro Master): It is directly proportional to the lens price. If your lens costs more than 2,000 yuan, it is recommended to buy one above 200 yuan. If the price of your lenses is less than 2000 yuan, you'd better not use UV glasses. Just a personal suggestion. Bian Xiao concluded: Among the suggestions of the above experts, Lao Lang is more in favor of Master Corning's point of view. For expensive lenses, there is no UV mirror, and my heart is really not practical. If the quality is too poor, then the lens is so expensive, and then a cheap glass piece damages some details, and my heart is even more insecure. Therefore, only from the price point of view, it is better to be more expensive and stable.

3. What kind of UV mirror should my lens match? When buying a UV mirror, you should first choose a UV with the same caliber as your own lens, and then choose a brand. How to choose, let's take a look at the people's recommendation! 1, Kobayashi: B+W, you have reason to be expensive. For UV mirrors, in addition to the original ones, I first recommend the brand B+W. Because the cost of this brand is relatively low, the coating technology of B+W is very advanced. An obvious feature is that when you drop water drops on its UV mirror, shake the lens with your hands, and the water drops will not spread out, but will only roll on the surface of the lens and will not touch the lens at all. Its MRC series ultraviolet filters have special multilayer coatings. This coating can effectively suppress ultraviolet rays and scattered multiple reflected light, and eliminate glare and mottled "ghost". In addition, MRC filter is harder than glass, so it can protect glass from scratches. B+W It used to be an independent supplier of optical filters, and later merged with Schneider of Germany to become a famous brand of Schneider. Reference price of multilayer coated copper ring: 3 12 yuan B+W 77mm MRC-UV multilayer coated copper ring reference price: 456 yuan 2. Xue Xin: There are many kinds of UV mirrors in Kengo. The most affordable one is Kengo UV. There are many kinds and the price is very common. The general price is around 100 yuan. It is recommended to use HMC (multilayer coating). It can be distinguished from the outer packaging that the green packaging is single-layer coated with UV, and the black packaging is multi-layer coated with UV. Kengo is a company that mainly produces photographic equipment and accessories. In fact, the products of Baogu, Kengo and Marumi all come from the same OEM, so the evaluation standards of other companies are the same. Kengo 37mm multilayer coated UV mirror reference price: 80 yuan Kengo 72mm multilayer coated UV mirror reference price: 128 yuan 3. Corning: I recommend the original factory, among which Nikon and Canon do the best. If your lens is a professional lens, you'd better choose the original UV, so as to maximize the performance of the lens. In fact, the original UV mirror is not as expensive as expected. The price around 300 yuan is already very good, and there are not many original models. The price mainly depends on the lens caliber. Generally, the price above 70mm is around 400, and the price below 70mm is around 300 yuan. More expensive are polarizers and close-ups, which will not be discussed today. Nikon 77mm multilayer coated UV mirror reference price: 400 yuan Canon 77mm multilayer coated UV mirror reference price: 380 yuan.