Why are different people displayed in front of and behind the camera-_-

There are several reasons why people get different photos in front of and behind the camera:

The focal lengths of the front and rear lenses are different, and the distance between the person and the lens is different when shooting, so the size of the portrait you see in the picture is also different. If you get too close, people will be obviously distorted locally.

In addition, due to the inconsistent lenses, the shooting quality is different. The front is used for self-portraits or video calls, with low pixels and low requirements. The back is used to shoot scenes and people, with high pixels and relatively standard lens quality.

Among them, the accuracy of your composition and the problems of adjustment technology lead to different visual effects such as the proportion, position and deformation of people in the picture. One more thing, many people like to take pictures with their mobile phones now. Generally, the position of mobile phone camera is rarely in the middle. The position of the lens in series is definitely different from another angle.

Extended data:

The scenery seen by human eyes is different from that taken by mobile phones and cameras. The principle is as follows:

The human eye is on the left and right sides, observing things from two angles at the same time, and imaging in the brain, so you will see more objects (for example, you can easily see the complete ears of the opposite person), and the three-dimensional sense will be strong, and the shape of the objects you feel will be more correct.

Both mobile phones and cameras look at things with one eye, and the pictures taken are from a single angle, so it is difficult to photograph the ears of people on both sides. Especially under the wide-angle focal length, it is very close to the subject and will have a strong perspective effect. For example, if the mobile phone is held above the eyes, the upper part of the face (eyes) will appear bigger. The mobile phone is placed under the face, and the lower part of the face (chin) looks bigger. People often use this function to take selfies, such as the 45-degree angle on the corner commonly used by beautiful women.

Of course, mobile phones and cameras can still take photos close to what people see. The way is to shoot as far away as possible. Shooting things in the distance, the perspective effect is very weak, and it is normal not to see things (this is what beautiful women don't want to see). Of course, the camera is better than the mobile phone, because the camera has a telephoto lens, and you can see the subject no matter how far you run. If the mobile phone is far away, the main body is very small and can't be seen clearly.