Definition of 3D 3D refers to something having three dimensions.
How is 3D made? Stereoscopy, any technique capable of recording three-dimensional visual information or creating the illusion of depth in an image Stereo camera, a camera with two or more lenses that simulates human binocular vision 3-D film, any visual presentation system that attempts to maintain or recreate moving images of the third dimension
What do we need for 3D? Anaglyph image, a 3D effect when viewed with 2 color glasses Stereogram, an optical illusion of depth created from a flat, two-dimensional image Chromadepth, another optical illusion of 3d that requires special glasses the process rearranges the color spectrum when viewed