A
3D camera is an imaging device that enables the perception of depth in images
to replicate three
dimensions
as experienced through human binocular vision. Some 3D cameras use two or
more lenses to record multiple points of view, while others use a single lens
that shifts its position.
The combination of the two perspectives, as with the
slightly different perspective of two human eyes, is what enables depth
perception. 3D photography can enable an immersive frozen-in-time moment for
stills or video content that seems real enough to touch.
The
principle behind the 3-D effect is called stereoscopy and the
corresponding technology is known as stereoscopic imaging. The difference
between objects seen through the left and right eyes (binocular disparity) is
what enables perspective in human eyesight, along with our accommodation
through focusing and visual center interpretation to integrate those two
perspectives.