Why is the imaging of digital cameras always different from that of human eyes or mirrors?

Because the visual angle of the human eye is about 53 degrees, and the camera lens has multiple visual angles. For example, the viewing angle of a wide-angle lens can reach 70-90 degrees, while the viewing angle of a telephoto lens is very small. Of course, there are differences in imaging with different viewing angles.

The focal length of ordinary digital cameras is mostly adjustable. If you want to achieve the same effect as the human eye, you have to use a standard lens close to the human eye. Take 135 camera as an example. When the focal length is 50 mm, it is close to the human eye. You can try to adjust the focus to 50 mm to shoot.

Choose 75 mm- 135 mm medium focus lens when shooting portraits, and the photos obtained are most in line with the proportion of the human body.

So don't be too close to the subject when taking pictures (taking pictures of insects, flowers, etc.). It's another matter), but take a few steps back, then focus on the subject and take a picture.

Of course, some inferior lenses can't guarantee the imaging quality.