What's the difference between flat mirror imaging and photo imaging?

There are still differences, and the two are formed in different ways.

Everyone has personal experience. Few people say that the image in the mirror is not imagined by themselves, but people often say that the photo is not like themselves. Because what you see in the mirror is due to the reflection of light.

As long as the mirror is flat, the position of each point on the image will not change relative to the object. Photos are taken by a camera, which is made by using the principle that the convex lens becomes a reduced real image when the object distance is more than twice the focal length, and belongs to refractive imaging.

Cameras usually make an analogy with eyes, but the exquisiteness of eyes is incomparable to cameras. Due to the inherent characteristics of the lens, lens distortion will inevitably occur, which makes the photos taken different from the real scenery. Therefore, the image in the mirror, in the eyes of others, is very close to yourself.

A plane mirror can form an isometric image, which is mirror symmetry. As long as it is a plane mirror, the image formed in an isotropic homogeneous medium will not be deformed. If you look in a flat mirror, you will find that your face is getting fat, that is, the problem of your face is not the problem of the mirror.

The photos taken by the camera can deceive people. The "deception" here includes not only image processing such as PS or beauty, but also the degree of deformation of photos taken under different equivalent focal lengths. Some exaggerated shapes may be shot with a short-focus fisheye lens or a super wide-angle lens.

Take a plane mirror as an example. When a parallel beam hits the mirror, the whole body will change direction in a parallel way, and the imaging at this time is the same as that seen by the eyes.

Camera imaging is the use of "pinhole imaging" to get out, and the light enters through the pinhole and is mapped on the photosensitive element, thus imaging.