Photography, why can’t the depth of field of the human eye be different from that of a camera?

The depth of field of the human eye is originally different from that of a camera. How can it be the same?

First of all, the focal length of the human eye is very small, and the depth of field belongs to a wide-angle lens; but the human eye has biological characteristics. Even on the same focal plane, the clarity is different. That is because the human eye sees The image is not entirely determined by the lens, but by instructions located in the optic nerve area of ??the brain. In other words, what you want to see is what is clear, not whether it is on the focal plane, even at the same focal point. On a flat surface, what you see is not as clear.