Binocular horizontal perspective of human visual acuity

1.∠xyz is actually the position blocked by the nose. The whole white range in Figure 2 is actually a blind spot for human eyes, except that you can see your nose and eyes.

2. In fact, only what you see in the range of ∠cyg has a three-dimensional sense.

3. A person's monocular comfortable field of vision is only 60 degrees, that is, 60 degrees is the best object to watch and take photos; The maximum range of stereo photography is monocular 124 degrees (156-90-4)×2, which is the line-of-sight level of two lenses, and the angles from double lines of sight to the inside of eyes are ∠ixg and ∠czj.

4. Let's talk about comfortable 60-degree stereoscopic imaging. As you can see, the line bf is the synthetic stereo photo we shot with a 60-degree lens. Where bk and lf are non-overlapping two-dimensional parts and kl is overlapping three-dimensional parts. I believe that most friends will find this problem when shooting stereoscopic photography and stereoscopic video.