Lumix G 12.5 mm / F12

The world's first^*1 interchangeable 3D lens LUMIX G 12.5mm / F12 (H-FT012) realizes 3D shooting (35mm camera equivalent: 65 mm)^*2. When this lens is attached, the DMC-GH2, DMC-G2 or DMC-GF2 artificially produces an effect called visual disparity^*3. Left-eye and right-eye images are captured simultaneously by the two lenses, and recorded using the side-by-side method. To view the recorded images^*4, simply connect the camera to a 3D compatible TV, such as a VIERA 3DTV with a mini HDMI cable.

*1 For a digital interchangeable lens as of September 21, 2010.
*2 When setting the aspect ratio at 16:9 with the DMC-GH2.
*3 Compatible with the DMC-GH2, DMC-G2 with the firmware ver.1.1 and DMC-GF2. A 3D media player that supports the MP (Multi-Picture) format is required to view 3D images.
*4 A TV that is capable of 3D playback using the side-by-side method, 3D Eyewear, and HDMI cable connection are required for playing the 3D images you have recorded.

How do the human perceive 3-dimensional images?
Because the left and right eyes are located at different positions on the face, the left and right eyes perceive slightly different images. The difference between the two images is called "visual disparity". The brain processes these two images with visual disparity to reconstruct spatial conditions, enabling us to see thing with three-dimensional depth

source : panasonic.net