Should SLR lenses be equipped with UV mirrors?

It is necessary to equip SLR lenses with UV mirrors.

The function of UV is to filter ultraviolet rays, not "good UV can filter ultraviolet rays", but the influence of ultraviolet rays on film is far greater than that of photosensitive elements of digital SLR, that is to say, for digital images, the influence of ultraviolet rays is very small, so it is not necessary to use UV to filter ultraviolet rays. On the digital SLR, UV is more about protecting the lens to prevent direct contact from damaging the lens.

Let's talk about the possible consequences of not using UV:

1, the lens in front of the lens is dusty, so you must be careful when wiping, but if you use UV glasses, you don't need to be so careful when wiping UV lenses;

2. If you don't use UV protection lens, there will always be scratches on the lens in front of the lens for a long time (the dust will cause some damage to the streaking lens), although it will hardly affect the shooting, but it will definitely make you feel uncomfortable. If you want to use this lens, scratches will also reduce its price;

3. In case the lens falls off, the UV lens is broken, not the front lens;

4. The scratches of the front lens group will be more prone to light spots when shooting in backlight;

5. Taking photos in desert, windy and humid environment, dust and mineralized water will cause certain corrosion to the lens.

Extended data:

The most common varieties of UV mirrors on the market are Kengo, SUNPARK, Panasonic and Canon, among which Kengo has the most UV mirrors.

Ultraviolet mirror

The most common varieties of UV mirrors on the market are Kengo, SUNPARK, Panasonic, Canon and so on. Among them, Kengo's UV mirror is the most common, which belongs to a brand with good quality and low price. As for digital cameras, the role of UV mirror is mainly to protect the lens, which is not as strict as professional photography, so many owners of digital cameras have chosen this brand.

UV mirrors on the market are divided into uncoated, single-layer coated and multi-layer coated. The coating plays an obvious role in preventing "glare", so the price varies greatly.

For digital camera users, they can choose according to their own economic strength. Like other digital camera accessories, parallel imports and fakes of UV mirrors are common, so we must pay attention to the distinction when buying them.

Generally speaking, the packaging of licensed UV mirrors is exquisite and the fonts are clearly printed. There are exquisite packaging containers (usually a delicate small glass box) and clear printed instructions in the packaging box, while the packaging of parallel imports and fakes is relatively simple. Some parallel imports are only packed in relatively simple cartons without any printed fonts on them.

References:

UV mirror-Baidu encyclopedia