How to distinguish the quality of UV lenses? How to choose a UV lens?

Kengao's words, first look at the edge of the printing, that is, the handwriting, regular Kengao is very fine. The printing of the fake Kengao is very aggressive, and if you look closely, there are fonts that are inconsistent in size, and the fonts are relatively bold. The second step is to find a black background, such as black paper, black cloth, etc., and put the UV mirror on it, to see how reflective it is, if you can clearly see your face on it, that is, the reflection is very strong, it proves that this is a crooked UV or a very ordinary UV, this identification method can identify all brands of UV, if it is a Canon or Nikon original UV.

According to the first step of Kengo's identification method, it is also identified.

In fact, judging the quality of a UV mirror, you can determine it from the following three aspects, first of all, the processing material of the UV mirror, get a UV mirror, you can see the metal bearing ring of its glass lens, some big brands are made of copper alloy, compared with the aluminum alloy used by the vast majority of brands is much more advanced. The second is the processing technology of the UV mirror, a good UV mirror, the anti-slip thread is much more detailed. Finally, the UV lens is visually inspected for light transmittance, usually on a black or darker background, pick up the UV lens and look at the reflection of the mirror.

What can't be illuminated is a good UV mirror, and like ordinary glass, the UV lens that can illuminate your own reflection very clearly is relatively poor, and the clearer the shadow, the worse the lens and coating.

Hopefully, the above information can be helpful to you.

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First of all, the processing material of the UV mirror, get a UV mirror, you can see the metal bearing ring of its glass lens, some big brands are made of copper alloy, compared with the aluminum alloy used by most brands is much more advanced.

How to identify the good and bad in particular, this requires special tools and tools that can help us identify.

How to distinguish the quality of the UV lens, it is common to extend the irradiation time.

UV mirrors can be divided into the following from second to best:

The above are the various logos of UV mirrors.

When purchasing a UV lens, it should be noted that after installing the UV lens, there can be no color cast effect on shooting in a normal environment, and after the camera is installed with this filter, the wide-angle end, especially the telephoto end, can focus clearly.

If the UV mirror is not plated and translucent, its light transmittance is only 90%, the ordinary UV mirror is double-sided single-layer coating, the light transmittance is about 96, in addition, there are multi-layer coated MC UV mirrors, due to the use of multi-layer coating technology, the light transmittance is far better than the ordinary UV mirror, so it can completely retain the characteristics of the original lens.

The aperture of UV mirrors is usually 46, 49, 52, 55, 58, 62, 67, 72, 77 (in mm) and so on.

The caliber of this Sony H machine is mm

It is recommended that you import, the domestic one has the Latitude brand, but ** and the imported one is about the same (difference of yuan).

It is recommended that you buy a Japanese Kengao, specializing in the production of UVs and adapter rings, and my Kodak camera also uses Kengao, which has always been very good.

1. The function of UV mirror is to filter out ultraviolet rays.

2. Most of the brands are supporting camera manufacturers, foreign brands include Canon, Nikon, Zeiss, Leica, Ricoh, and domestic brands such as Seagull and Phoenix.

1. Filter out ultraviolet rays to make the picture more comfortable.

But! The effect is really not very obvious. So a lot of people buy it now, mainly to protect the lens. (Sleeved at the front of the lens, bumps or anything will not hurt the lens, at most you will change a UV lens).

If the budget is not high, you can choose Kengao, and if the trench is big, you can directly B+W. Whether the coating is or not and the number of coatings are greatly affected, and multi-layer coatings are expensive. There is no need for simple protection.

There are many kinds of UV mirrors, ordinary UV mirrors mainly play a role in protecting the lens from being scratched, because the lens itself has a very professional anti-glare, increase transmittance and other multi-layer coatings, so ordinary UV mirrors can not play a role in strengthening in these aspects, on the contrary, they may reduce light transmittance, so when choosing, we must first coat well, good light transmittance, the most effective inspection method is to move the black object to see, there is no mirror effect, you can't illuminate your face, indicating that there is no reflected light, good light transmittance.

In addition, there are also varieties such as color filters and grayscale lenses, which are determined according to the needs of special photographic effects, which are very complicated.

It is common on the market to be Kengao, but more than 90% of them are fake, just like professional photographers are difficult to tell, the easiest way is what I said above.

Protects the lens and filters UV rays. A good UV lens filters ultraviolet rays better. Poor quality UV lenses not only fail to filter ultraviolet rays, but also affect the image quality of the lens.

1. You can look back from the front of the lens, the reflection is usually blue-green, etc., the less reflective, the better the transmittance, and the better the general quality, the transmittance will reach more than 99%;

2. The UV mirror on the market is divided into no coating layer, single layer coating and multi-layer coating, and the coating layer has a more obvious effect on preventing "glare", so there is a huge difference, for digital camera users, they can choose according to their own economic strength;

3. When purchasing, you must pay attention to the consistency of the filter aperture of the UV mirror you want to buy and your own digital camera, and carefully check the performance parameters of the UV mirror when purchasing.