There is a big difference between a mirror and a camera. Which one is true? The mirror at home is beautiful.

As long as the mirror is a qualified flat mirror. And the light is normal, what you see is the real yourself. Mirrors only reflect plane light.

The lens of the camera has some geometric distortion. Especially the low-end wide-angle lens, the distortion is more serious. Secondly, because the focal length of the camera is different, the portrait angle is different. Both cameras and display devices have the problem of color reproduction distortion which is quite different from the real situation. For example, the color gamut of a notebook is 72%, and nearly one-third of the colors cannot be displayed correctly, so the authenticity of the camera is much worse.