Originally Posted by JonStatt
Velveting a room is not there to remove depth cues but to remove reflections.
I velveted my room not just to stop reflections to the screen, but very specifically to remove other visual cues in the room, to increase the sense of image depth. And it works!
I've talked before about the "closing one eye" experience when watching a 2D image on screen. When I (and other people who have tried this) cover one eye while at a movie theater, or watching a movie at home, an amazing change happens. As I keep one eye covered, the image slowly starts looking more and more like a 3D image, like I'm peering into real space, real spacial relationships between objects on the screen.
Again, others who have tried this find the same amazing illusion.
I surmise that the explanation is roughly that our brain uses a variety of cues to determine depth and distance, and when I deprive myself of the stereoscopic cue by only using one eye, then my brain is forced to start making sense of what I'm seeing based on it's other methods, from the information it still has - e.g. shading, shadows, lines of convergence, etc.
On a similar theory I have tried totally blacking out all round the image, floor, walls, ceiling, no visible objects in front of the screen, just pitch black. And it seems to produce a similar effect: without other visual cues telling me "the image in front of you is flat," my brain seems to latch on to the only depth cues it has available - from the on-screen image. And there becomes an increased sense of depth and distance between objects, almost 3D like in many scenes. It was after experimenting, seeing if this would be the case and finding it so, that I have gone to the trouble and expense to be able to fully black out around my image.
YMMV I'm sure....