low 3d effect when close to a large screen. projector 3d issues.
I'm experimenting at the moment with different screen sizes with my short throw projector, and I'm noticing that massive perceived screen sizes have extremely poor 3d. And I'm trying to figure the best way around it.

Currently I'm trying sitting about 2 foot away from a screen that's about 60 inches. This completely covers the peripheral vision and is extremely immerse for some games. ( I dint intend in keeping if this extreme by the way)

Anyway. The problem is, while sat there, the 3d is weak, but as I move further back it gets WAY better. The depth and convergence both become enhanced, and at 11ft away, it looks amazing. (but the perceived screen size is now only about 30 inches.)

It seems that its all about the relative size of things compared to the actual measurable size of separation. For example, when sat close, the separation could be 4 inches, while, when sat away, its only 1 inch. You would think that 4 inches would be significantly more intense 3d, but its the opposite.

I'm assuming that there is a natural max separation that your eyes should be seeing, probably the same distance between your eyes, and matching this gives the best 3d effect.

Both popout and distance dint really work with a large close up image. Increasing the max depth helps, but then causes the separation in the distance to be something stupid like 10 inches, which seems mad, but works.

I probably haven't made much sense, and typing on the phone probably hadn't helped! Just wondering if others have tried this, and what can be done about it,

Just seems, the larger the perceiveable screen size, the worse the 3d using the normal depth and convergence options.

Ta.
I'm experimenting at the moment with different screen sizes with my short throw projector, and I'm noticing that massive perceived screen sizes have extremely poor 3d. And I'm trying to figure the best way around it.



Currently I'm trying sitting about 2 foot away from a screen that's about 60 inches. This completely covers the peripheral vision and is extremely immerse for some games. ( I dint intend in keeping if this extreme by the way)



Anyway. The problem is, while sat there, the 3d is weak, but as I move further back it gets WAY better. The depth and convergence both become enhanced, and at 11ft away, it looks amazing. (but the perceived screen size is now only about 30 inches.)



It seems that its all about the relative size of things compared to the actual measurable size of separation. For example, when sat close, the separation could be 4 inches, while, when sat away, its only 1 inch. You would think that 4 inches would be significantly more intense 3d, but its the opposite.



I'm assuming that there is a natural max separation that your eyes should be seeing, probably the same distance between your eyes, and matching this gives the best 3d effect.



Both popout and distance dint really work with a large close up image. Increasing the max depth helps, but then causes the separation in the distance to be something stupid like 10 inches, which seems mad, but works.



I probably haven't made much sense, and typing on the phone probably hadn't helped! Just wondering if others have tried this, and what can be done about it,



Just seems, the larger the perceiveable screen size, the worse the 3d using the normal depth and convergence options.



Ta.

#1
Posted 09/23/2011 07:59 AM   
I can't much else than verify that your observations are correct.
When using a projector it's natural to sit further from the screen than with a monitor/tv. Even if the actual fov isn't increased directly compared to the change of size the result using a projector is a way more immersive and lifelike experience. I use 100" projectorsetup since quite a few years and i sit appr 7-8 feet from it and adjust the stereoeffect accordingly. While 3d-gaming a monitor gives the impression of looking into an aquarium a projector will more effectively brings you closer and sometimes almost into the game.
The observation you describe about depth being less when being closer to the screen is also correct (everybody with a 3d-setup can verify if tested). When choosing seats in a 3d-cinema it's crucial that the front rows should be avoided for a good experience because of this!
A stereoscopic 3d-screen is not a hologram even if the reference to the screensurface disappears. This is obvious if you try to move in front of a paused game or a 3d-picture (everything should be moving when you move). It's all about conflicts between our different senses for depth and stereopsis.
I can't much else than verify that your observations are correct.

When using a projector it's natural to sit further from the screen than with a monitor/tv. Even if the actual fov isn't increased directly compared to the change of size the result using a projector is a way more immersive and lifelike experience. I use 100" projectorsetup since quite a few years and i sit appr 7-8 feet from it and adjust the stereoeffect accordingly. While 3d-gaming a monitor gives the impression of looking into an aquarium a projector will more effectively brings you closer and sometimes almost into the game.

The observation you describe about depth being less when being closer to the screen is also correct (everybody with a 3d-setup can verify if tested). When choosing seats in a 3d-cinema it's crucial that the front rows should be avoided for a good experience because of this!

A stereoscopic 3d-screen is not a hologram even if the reference to the screensurface disappears. This is obvious if you try to move in front of a paused game or a 3d-picture (everything should be moving when you move). It's all about conflicts between our different senses for depth and stereopsis.

Image

Mb: Asus P5W DH Deluxe

Cpu: C2D E6600

Gb: Nvidia 7900GT + 8800GTX

3D:100" passive projector polarized setup + 22" IZ3D

Stereodrivers: Iz3d & Tridef ignition and nvidia old school.

#2
Posted 09/23/2011 12:09 PM   
Do you have the "monitorsize" registry entry set correctly for a 60" screen size? I think you'd set it at "120" for a screen that size, then make it read-only for the system.

I don't know if that would help at all; and you've probably already done that.
Do you have the "monitorsize" registry entry set correctly for a 60" screen size? I think you'd set it at "120" for a screen that size, then make it read-only for the system.



I don't know if that would help at all; and you've probably already done that.

#3
Posted 09/23/2011 05:08 PM   
[quote name='Pyrocles' date='23 September 2011 - 06:08 PM' timestamp='1316797731' post='1297512']
Do you have the "monitorsize" registry entry set correctly for a 60" screen size? I think you'd set it at "120" for a screen that size, then make it read-only for the system.

I don't know if that would help at all; and you've probably already done that.
[/quote]
Yeah! Doing the "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Nvidia Corporation\Global\Stereo3D" does the trick for!
Just reduce the value ("2c" is mine@100")! Lock up the key and it's done!
My V700 emachines and me are having a great time with this! /biggrin.gif' class='bbc_emoticon' alt=':biggrin:' />

If you get error's during intallation of 3dvision-drivers in the future, don't panic, is's o.k. to ignore them ;o)
[quote name='Pyrocles' date='23 September 2011 - 06:08 PM' timestamp='1316797731' post='1297512']

Do you have the "monitorsize" registry entry set correctly for a 60" screen size? I think you'd set it at "120" for a screen that size, then make it read-only for the system.



I don't know if that would help at all; and you've probably already done that.



Yeah! Doing the "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Nvidia Corporation\Global\Stereo3D" does the trick for!

Just reduce the value ("2c" is mine@100")! Lock up the key and it's done!

My V700 emachines and me are having a great time with this! /biggrin.gif' class='bbc_emoticon' alt=':biggrin:' />



If you get error's during intallation of 3dvision-drivers in the future, don't panic, is's o.k. to ignore them ;o)

Win7 Ultimate 64bit SP1, Gigabyte P67A-UD4-B3, I7 2600K@4500, 16GB Kingston HyperX DDR3@1600, GTX 570 SLI with 3DVision Kit, Creative X-Fi extreme Music, NesteQ ECS XS-750, eMachines v700

#4
Posted 09/23/2011 06:03 PM   
See the latest thread here about this: http://forums.nvidia.com/index.php?showtopic=209003

We've been asking to be able to change the screen size in the control panel for years, now. There's no way nvidia actually uses their product, because this is such an easy fix to an absurd amount of frustration for anyone who owns a projector.
See the latest thread here about this: http://forums.nvidia.com/index.php?showtopic=209003



We've been asking to be able to change the screen size in the control panel for years, now. There's no way nvidia actually uses their product, because this is such an easy fix to an absurd amount of frustration for anyone who owns a projector.

#5
Posted 09/23/2011 06:37 PM   
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