When you have a camera or a new lens, whether it is big or small, expensive or cheap, the first thing is to match a UV lens for a beautiful lens, so how to choose a UV mirror with different brands and different price points on the market?
One of the characteristics of the UV lens is that it can protect the lens, so what can distinguish the quality of the UV lens is the light coating on the lens.
As we all know, all lenses have a layer of anti-reflection coating, and the coating has a very great effect on the quality of imaging, so the UV lens is the same as the lens, and there will also be an anti-reflection coating, and the color of the anti-reflection coating of each model and brand is also different, the following figure shows BThere are several different UV mirrors in WAYLANDAU, and the colors are different.
Does color matter?
The coating color does not determine the quality of a product, due to the different technical indicators of each product, as well as the different processing technology produces different colors, so the selection of filters can not only look at the coating color. Below**One light blue, one light green blue, one brown three UV mirror coatings**.
Is it better to have more coating layers?
In fact, this is a misunderstanding, the number of layers does not mean that the coating is good or bad, because there is no industry standard that says that a coating of 20 layers is definitely better than a coating of 10 layers, or the number of layers is used to determine the quality of a product. Most of the time, the number of coating layers is designed according to the product performance index, and the production only depends on the final performance of the product, rather than the number of coating layers. On the contrary, when the index meets the requirements, it is better to have fewer coating layers, which can simplify the process and make the product more stable and reliable, so please do not be superstitious about the number of coating layers.
The core function of anti-reflection coatings is to reduce reflection (only for UV lenses, not coatings for other purposes).For example, infrared filters, RGB filters and other special-purpose coatings), which increase the transmittance of light, are also often referred to as anti-reflection coatings. Therefore, the lower the reflection of the coating, the better the image quality.
Reflection directly affects the quality of imaging, the lower the reflection indicates the better the permeability, now we do not use professional testing equipment, but use several simple and convenient methods to test and compare, I hope you can also use a simple method to quickly evaluate the quality of a UV mirror.
Keyboard test. 1. The UV mirror on the far left is not coated, the surface is whitish, the reflection is strong, the transmittance is very poor, the black keyboard has become gray and white, and the words on the keyboard have also decreased due to reflection.
2. The UV mirror on the far right seems to be very good, very transparent, which is coated with anti-reflection coating UV, which is also a conventional product on the market, but the color will still be a little greenish.
3. This UV mirror in the middle, at first glance, seems to be empty, there seems to be no lens, there is almost no reflection, the keyboard words on the back are very clear, and the black keyboard still looks black, and the color has not changed. Then this is BWayLandau's new mainland ultra-low reflection second-generation UV mirror launched this year. The performance is obvious, surpassing the previous model, achieving high transmittance and high definition.
Lighting test. Sun test.
Use the UV mirror to form a reflection angle between the sun and the wall, and then the sunlight will be reflected on the wall, which can be clearly seen that the reflection of the ordinary conventional UV mirror is very obvious and strong, and even the color is clearly projected onto the wall. The reflection of Landau's ultra-low UV reflection seems to have almost no reflection in comparison.
B. can be seen in the testThe second-generation UV of WAY Landau Continental Ultra-Low Reflection has excellent practical test performance, which will also indicate a direction for the future product development of Landau filter. As early as 2022, Landau launched the first generation of ultra-low reflection UV, and the market response was good, and this year it launched an upgraded version of the second-generation continental ultra-low reflection second-generation UV mirror, the picture below shows the first and second generations**.
Continental series ultra-low reflection camera UV mirror, representative Bway higher quality materials and technical standards. The product is made of B270 optical high-definition glass with ULR ultra-low reflection coating, which makes the product reflective rate R<01%, transmitt>994%, (the reflectivity of general standard products is R<4%, and the transmittance is T>98%) SCC ultra-clean coating waterproof, anti-fouling and mildew-proof frame adopts diamond knurling process, which is more atmospheric and extraordinary, engraved with the peak logo, representing the noble quality of the continental ultra-low anti series.
In addition, the outer packaging of the continental ultra-low reflection series products is particularly well-designed, which is more distinctive, and the internal storage no longer uses the previous PP polypropylene plastic box plastic box, but uses degradable paper packaging, which reduces the use of plastic packaging products, is more environmentally friendly and low-carbon, and hopes to contribute to our green earth.
This product will also be available in January 2024 and is currently in stock.
I hope today's article will be helpful for you to choose a product.
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