What's the use of an external lens on a mobile phone? How to choose?

The function of the external lens of mobile phone: make up for the deficiency of the original lens of mobile phone in visual range and focusing distance, and shoot ideal works. It is worth emphasizing that the external lens of the mobile phone cannot change the pixel of the mobile phone. If you add an external lens to the mobile phone with12 million pixels, the image will still be12 million pixels or16 million pixels.

Selection method of external lens of mobile phone;

1, depending on the lens material. There are two kinds of mobile phone lenses on the market, one is glass and the other is synthetic plastic. Compared with synthetic plastic materials, glass lenses have certain advantages in light transmittance and color reproduction.

2. See if the lens is coated. Whether the lens is coated or not can be distinguished at a glance when placed in the sun. If the sun shines purple or green on the lens, it means that the lens is coated. Coated lenses can reduce light reflection, increase light transmission, and reduce the occurrence of ghost and glare to a certain extent, thus improving image quality.

3. Special edition or regular edition. Special edition refers to the lens that matches a mobile phone separately. This kind of lens is often a very stable mobile phone case. The universal version is a common way to fix the lens with clips, which is slightly less stable. But as long as it doesn't shake violently, it is still quite stable.

4. Look at the workmanship. As a sophisticated product, the quality of mobile phone lens can be indirectly known through the roughness of workmanship. The manufacturing process of the mirror body, whether the edge is regular and whether the parameter text is printed clearly are all important criteria.

5. Distortion or dark corners. Distortion and dark angle are important indexes for choosing wide-angle lens. High-quality lens can ensure no dark angle and good distortion control. For example, taking a picture of a building, if the lines of the building are relatively straight, the distortion control is good, and if the curves are not good, the distortion control is poor.

Extended data

All mobile phone external lenses are divided into the following five categories according to their functions: wide-angle lenses; Macro lens; Telephoto lens; Fisheye lens; Various external filters (starlight mirror, neodymium mirror, polarizer).

At present, mobile phones are mainly divided into two camps: Android and Apple. The models of IOS phones are relatively concentrated, with 5\5S\6\6S\6P\SE\6SP\7\7P as the top model, while the brands of Android camp models are various. Don't be outside all kinds of mobile phones. The number of native lenses (single shot and double shot) is different for each mobile phone.

In order to make their products more widely available to the market, the manufacturers of mobile phone lenses finally adopted the following treatment methods: customizing special housings or clips for IOS phones to install lenses, and making universal clips for Android phones.

Therefore, whether the lens is suitable for the mobile phone lens depends on whether the clip matched by the manufacturer can be installed on the mobile phone and whether the caliber of the mobile phone lens can completely cover the original lens of the mobile phone.