Why is the face a little smaller when looking in the mirror, and the face is big and wide when others take pictures of videos?

Don't say that we ordinary people, that is, those super-class international stars, are amazing in life photos and casual clothes! There is a famous saying in Hollywood that I can't remember the exact words clearly. The general idea is not whether you are beautiful or not, but how you use it. When shooting movies and TV series, the angle of each shot is repeatedly designed and tested by high-level professional photographers. In particular, the glamorous close-ups of the stars have been carefully produced many times. Relatively speaking, it is easy to take a good photo, because you can choose the most beautiful one among many scenes, design the light at a fixed angle, highlight the highlights of the subject at right angles, cover up the defects ... and even make the aesthetic feeling reach the extreme through the professional skills and superb tailoring of the photographer. But life video is much more difficult, because it is difficult to make the best choice of scenes in random dynamics. The angle and light of the characters are even more uncontrollable. Therefore, if you want to learn camera technology professionally, you must first learn camera technology systematically and professionally! You can't shoot a good camera without deep photography skills. As for the equipment, for non-professional camera technology and non-entertainment themes, the definition of the equipment is slightly lower or better (of course, it is not absolute), which makes it easier to cover up those ugly problems, such as bags under the eyes, freckles and other small links that are not usually paid attention to. High-definition camera equipment, the lens will capture all this. In addition, sometimes the equipment settings such as white balance or color tone are not properly adjusted, which will not only show these defects mercilessly, but may even be very exaggerated in the lens! Facial spots that are invisible to the naked eye may be obvious in the lens. For this problem, proper makeup may be able to make up for it to some extent. In addition to covering, makeup can also make facial organs more three-dimensional, but this effect is only effective for the front lens and has no effect on the side angle. There was once a singer. I think her name was Snow White. Her nose is very flat, so the cameraman is told not to pat her side corner every time, so as not to expose this defect. This is also a good solution. Back to the supplement: if you use a wide-angle lens, the distortion produced by the lens will exaggerate the role of the near big and the far small. For example, the face is patted on the front, and the nose is particularly prominent. When shooting with telephoto, the deformation is very small! How to avoid using wide angle? As long as it is not close to the camera lens (preferably more than 2 meters)