Can you take pictures with two cameras?

This is the basic principle of three-dimensional photography. The distance between the optical axes of the two cameras is equivalent to the distance between human eyes, but the difficulty lies in.

1) How to compose and play images,

2) How to make the viewer only see the right picture with his right eye and the left picture with his left eye?

You can try static photos first. When using the above equipment, you can take one photo each and put it on the screen, separate the two photos with a piece of cardboard standing upright in the center of the screen, and look at the photos with your nose against the cardboard, so that your left and right eyes can only see their corresponding photos. At this time, you can synthesize a three-dimensional image in your mind.

That's how stereo aerial photography looks, but it's done with two lenses instead of cardboard. Olympus has produced a digital camera for fools. It digitally synthesizes a photo into two, then synthesizes it into a picture file, develops a 4R photo, and puts it into the attached 3D browser (lens type) to watch the virtual 3D photo.

In the movie era, two cameras were used to shoot images, and then two projectors were used to put them on the same screen. The single image was red (right) and blue (left). Viewers wear red (right) and blue (left) glasses, so that the left and right eyes can see the image without interference, and they can synthesize a stereoscopic image in their minds.

Nintendo Red & White 3 d game adopts switching display mode, with left and right eye pictures appearing alternately on TV, and wearing synchronous LCD glasses. When playing the left eye picture, the right lens is black, and when playing the right eye picture, the left lens is black.

Due to the red-blue method, the color reproduction is not good, the alternating picture flashes seriously, and the eyes are extremely tired.

Later, it was polarized, and the right eye picture was polarized at 0 degrees. Look at it with a 0-degree polarizer. The left eye picture is polarized at 90 degrees and viewed with a 90-degree polarizer; Nowadays, 3d TV with glasses uses the polarization principle.

In naked-eye 3D, the screen of the left and right eyes is cut into thin strips and played at the same time, and then a grating is placed in front of the screen so that the left and right eyes do not interfere with each other. This way, the viewing angle is very small and can only be watched by a single person. Later, a follow-up grating was developed, which can dynamically configure special gratings according to the number and position of the detected viewers to solve the problem of multi-person and wide viewing angle. This principle can put both hands between the eyes and the screen, and the left and right eyes take turns to look at different parts of the picture.

In short, when you play and watch, you must look from left to right without interfering with each other. Shooting is not a problem, but it is difficult to play and watch the ball.