Originally Posted by anotheruser
A quick question after reading the 3D Myth Thread
I am looking to buy a 3DTV from Samsung.
I already have four pairs of 3D glasses procured from various cinema visits. Can I use these to view 3D content as well as the active shutter ones? If not, are there any 3DTV's that I could?
What makes active shutter so different to the cheap plastic ones?
If you buy a passive
3D TV, you can use the theater glasses, but you can't use both passive and active shutter together.
Unlike passive 3D in the theater, or active 3D at home, where two complete L/R views are provided so one sees a whole 1080P picture with each eye, passive TV works by splitting each eye's view in half and interleaving the right and left eye views into every other line on the TV, so the odd lines are for one eye, and the even lines are for the other, or 540 lines for each eye.
There is a polarized filter mask on the TV screen which, in concert with the polarized filters in the glasses, filters the corresponding (odd or even) lines for each eye. This results in 540 lines for each eye, with black lines in between (half resolution per eye). The glasses are cheaper than active shutter glasses though, and some people don't mind the black lines and loss of resolution.
In active shutter 3DTVs, each eye's view is flashed one after the other at full resolution, and the shutters in the glasses open only when that eye's view is being displayed, then close while the other eye's view is displayed.
The active shutter lenses are actually LCD screens that are opened or darkened electronically, which is why active shutter glasses cost more.