I've seen a lot of conjecture on here about the 3D Depth Slider, and what effects turning the 3D off might have, but I still haven't seen anyone clearly explain what the slider actually does. To generate a 3D image, each eye must be fed a slightly different picture. I understand that with the 3D turned on, two images are rendered and a parallax barrier inside the screen blocks the view of one of them for each eye. What I don't quite understand though is that the 3D Depth Slider is said to be able to adjust the depth of the 3D effect. How does it do that? Does it send a signal into the software and cause it to render the second image from a view point farther apart from the first? Or is it just some kind of hardware manipulation within the screen? Also, with the 3D turned off (Slider all the way down), does the device then just render both images from the same view point, or block the second image entirely?