Without the glasses, the TV looks normal. This filter (a Film Patterned Retarder is one type) makes the odd lines on the screen only visible to the left eye, and the even lines only visible to the right. The TV has a special filter that polarizes each line of pixels.
#3D VIDEOS FOR 3D GLASSES 1080P MOVIE#
Passive uses inexpensive polarized glasses, like what you get at most movie theaters. The difference between the two screen images is what gives a perception of depth. The image on screen is intended just for your right eye. Here you can see the left eye shuttering closed. Geoffrey Morrison/CNET (Hugo clip courtesy of Paramount) The image on screen is only intended for the left eye. Here you can see the right eye shuttering closed. Keep in mind the camera was set at a fast shutter speed itself in order to capture the lenses, well, shuttering.
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Here's what the active glasses look like when they're working. They've been able to do this for a while.Īctive 3D can be found on plasma, LCD, LED LCD, and all front and rear projectors for the home. All that's required of the TV is the capability to refresh fast enough so each eye gets at least 60 frames per second. This, in theory, means the information meant for your left eye is blocked from your right eye by a closed (opaque) shutter. Active 3D uses battery-operated shutter glasses that do as their name describes: they rapidly shutter open and closed. The two current methods to do this are called active and passive. Ideally, the right eye doesn't see any of the information meant for the left eye, and vice versa. In order for you to see "depth" from a 3D TV, each eye has to see slightly different information. Is there is a way for me to really tell the difference between an active and a passive 3D?įirst, the basics. LG has all these international certificates for the best 3D picture and claims it's full resolution, but you and others claim Passive 3D is half the resolution of a real 1080p. CNET reader Taher asks: I'm trying to decide between two 3D TVs: a Panasonic that's active 3D and LG that's passive 3D.