I just bought a set of cameras. Is it necessary to equip the lens with UV lenses?
When many beginners of photography buy a lens in a physical store for the first time, the merchant usually recommends a UV lens to you, saying that the front lens of the lens is very fragile and it is best to have a UV lens for protection. So what exactly is a UV lens for? Is it necessary to have a UV lens after purchasing a lens?
UV filter is also called UV lens, the full name is ultraviolet filter mirror. It is a small thin lens that can be installed in front of the camera lens. It looks like a piece of transparent glass, but because of the antireflection coating on it, it looks like some colors from some angles, such as purple or purple. Red etc.
In the early days, the main function of UV mirrors was to help digital cameras eliminate The interference of ultraviolet rays on the CCD, so that the imaging is better. Since its development, the image sensor of most SLR cameras has now been popularized as CMOS, and the sensitivity of this photosensitive element to ultraviolet rays is almost negligible. Therefore, the effect of UV mirrors in actual anti-ultraviolet rays has been greatly reduced.
Do you think the UV mirror is useless at this time? NO! In fact, it is necessary to buy a UV lens as a protective lens. The store tells you that the lens is very fragile. That’s right, it is easy to be contaminated and broken, and a UV lens can play a good role in protection.
If it is a cheaper lens, there is actually no need to add one UV mirror to protect. But if the lens is more expensive, it is better to match a better UV lens. After all, if the front mirror is really damaged, I am afraid that the maintenance fee is more expensive than the UV mirror.
Some people worry about whether the UV mirror will affect the image quality, and the high-quality UV mirror has little effect on the image quality. Just pay attention to the choice of caliber when purchasing. The caliber of the UV lens is usually: 46, 49, 52, 55, 58, 62, 67, 72, 77, etc. Generally speaking, the larger the caliber, the more the lens is. The more expensive, you can choose according to your own lens and needs. According to the quality of light transmission performance, UV mirrors can be divided into ordinary UV, MC UV and other more professional UV filters with better light transmission performance.
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