Can a DSLR produce 3D effects? Are the 3D effects in film and television works synthesized in post-production?

Two SLR cameras have the same focal length, exposure and other settings. The distance between the two cameras is about 10cm. They shoot the same subject. After the film is released, the two aligned images are viewed through the corresponding stereoscope, that is, It is a 3D stereoscopic image. A camera can also be moved twice to take pictures, but the subject should not move to change the scenery.

3D film and television works use two cameras or cameras to shoot the same scene and actor performances at a certain angle at the same time to obtain a three-dimensional effect. Since it is more convenient to obtain three-dimensional effects in on-site two-camera shooting and easier than post-production, post-production three-dimensional effects are rarely used in film and television works.