The SLR lens is gray, which affects the image quality. Can I clean it after sale?

First of all, I'm sure I can clean it up after sale. I found this for you.

See if it works for you.

As one of the most precise components in the whole camera, the daily maintenance of the lens is directly related to the output of high-quality photos, especially the lens of SLR cameras. Let me introduce the tools and uses of lens cleaning to you first.

First of all, as one of the most traditional lens cleaning tools, lens paper has the advantages of extremely fine fiber, soft paper and low cost, so it really won the favor of most photographers in the early days. At present, the price of a book 10 is around 2 yuan. I don't use lens paper much now. On the one hand, the price is cheaper, and the quality of paper is getting worse. On the other hand, the softness of paper can never be compared with that of cloth. However, if you encounter stubborn stains, you can use disposable lens paper, fold it into a triangle, and wipe the lens surface with a little distilled water in one corner.

Followed by suede, which is also one of the traditional lens cleaning tools, has been completely eliminated. The reason is that although the price is cheap, it is still unclean and depressing to rub around.

Consumer digital cameras often use lens cloth to wipe the lens. At present, the most popular is 3M magic cloth. Imported superfine fiber raw materials are used, which has strong decontamination rate and does not damage the surface. Due to the special technology, dust accumulation and dust hiding are 4-5 times higher than other lens fabrics! The price is not expensive either, around 15 yuan.

Most users who use lens pens are high-end users. Of course, there are also mini-lens pens designed for small-caliber lenses, but the price of more than 50 yuan is prohibitive. The working principle of lens pen is to use the grinding effect of toner to clean it. Because the hardness of toner is much lower than that of lens coating, it will not harm the lens, and it is the best lens cleaning tool at present. At the other end is a brush. Lenspen brand lens pens have the highest market share, and the price is around 70 yuan. At the same price, MINIPRO and DIGIKLEAR are first-class products.

The most important tool for cleaning the lens is blowing, which is also the first process and the most commonly used tool for cleaning the lens. To judge the quality of a blowing, we mainly consider the gas storage capacity, material and airflow principle. The most traditional medical ear washing ball, that is, the leather tiger, is the cheapest blowing at present. Its price is only 5 yuan, but it feels bad, and the air inlet and outlet are universal, which is easy to cause circular pollution. The price of mid-range hair dryer is around 20-30 yuan, and the price of high-end Swiss AF hair dryer is around 60 yuan. They all adopt independent air inlet and air outlet designs, and the main difference is the feel and workmanship.

The last thing to mention is the lens water. Maybe everyone has a cleaning kit given by the dealer when buying a camera, including the so-called lens water. Here, the author reminds everyone that the water composition of this lens is unknown, and the whole set price is around 20 yuan. It's probably tap water that fools people! The lens of consumer digital cameras does not need to use lens water. For some SLR lenses, it is not recommended unless absolutely necessary. Even if you want to buy it, it is recommended to buy imported lens water. The famous HAMA lens water is made in Germany, bottled 15 ml, and the price is 70 yuan; Kodak lens water, the main components are water and carbomer, and the price of a small bottle is around 80 yuan; Zeiss's lens water is the most famous in China. For the convenience of use, Zeiss wet lens cloth is also sold, and the price is within 100 yuan.

Daily lens maintenance does not mean wiping the lens every day. Tiny dust and water stains on the lens surface have little effect on imaging. You mustn't expect to wipe the lens out of the factory. For the lens of consumer digital camera with small aperture ratio, it is enough to blow off the dust on the lens surface with air. If you encounter a stain that can't be blown off in a large area, you can gently wipe it with a lens cloth (blow it first and then wipe it, the order should not be wrong, and the steps should not be less). If it is a SLR lens, it is better to wipe it with a lens pen, usually from the middle of the lens to the periphery in a spiral circle. One thing to be reminded here is that the lens pen is specially designed for optical lenses. Do not use it on wet surfaces, especially when dipped in water, otherwise it will fade.

If you need lens water to clean the lens, you should prepare cotton in advance. First, make 3-5 smaller cotton balls and press them into cakes, the size of which is one third of that of the mirror, and then prepare 3-5 large cotton balls and press them into cakes, the size of which is two thirds of that of the mirror. Dip a small cotton ball into a small amount of lens water, and then spiral wipe the lens surface from the center. Then, when the lens water is still wet, wipe it with a big cotton ball in the same way.