Why do you shoot yourself with the camera in front of your mobile phone? Eyes are big and small, but I really can't see them in the mirror. I feel that the five senses are quite terminal.

The camera lens of mobile phone is small in size, simple in structure, with poor ability to correct distortion or no correction function at all, and most of them are wide-angle lenses. Wide-angle lens is characterized by strong perspective when shooting objects, and the effect is that the closer the image is, the bigger the image is, and the farther it is, the smaller the image is; There is barrel distortion, that is, making a square into a near circle. If you shoot people at close range, your face will be fat, and a close nose is a big nose. Face a little sideways, the near face is big, the far face is small, and the size of the face is not harmonious; The near eye is big and the far eye is small, which becomes a phenomenon of different sizes.

In order to avoid this phenomenon, it is necessary to shoot from a long distance, of course, not too far. The images taken by people are very small and can be taken at various distances. If the effect is not distorted, you should use this distance to shoot more. Try not to take close shots, especially head shots. If the lens is a zoom lens, it is generally necessary to shoot with a medium focal length. The barrel distortion at the short focal length and the pincushion distortion at the long focal length should be known and avoided in application.