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3d tv / monitor

post #1 of 7
Thread Starter 
Am i right in thinking that to play games in 3D the TV has to be 120Hz.

So the 3D TV's that are only 70HZ will not work for gaming in 3D.

Would i Still be able to watch 3D films from my pc though?

And why does it have to be 120HZ?

Thanks to any 1 who can answer all these questions.
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post #2 of 7
Not an expert, but here is my understanding of it all so don't take it as 100% correct biggrin.gif

They have to be higher Hz because of how they work - they alternate between showing an image for the left eye and then an image for the right eye, and the glasses you wear do the same thing by blacking out right lens when displaying left side image and vice versa. It all happens so fast that your eyes cannot detect when the lens is blacked out, and it just looks darker.

Because of this, if you want to get 60 frames per second, you need 60 frames per eye, so a total of 120Hz is needed. I think you need 120Hz for gaming because at 30fps games can feel a bit choppy.

I'm guessing that a 3D TV can get away with being 60 or 70Hz because films usually are 30 or less frames per second, so you only need 60Hz for the 3d to work.

I would assume you could still watch 3D films from your PC if the screen is 3D ready.

Follow up question...why can you not watch a 3D film on a normal 60Hz monitor? Can the images not alternate fast enough?
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post #3 of 7
Thread Starter 
Quote:
Originally Posted by olli3 View Post

Not an expert, but here is my understanding of it all so don't take it as 100% correct biggrin.gif
They have to be higher Hz because of how they work - they alternate between showing an image for the left eye and then an image for the right eye, and the glasses you wear do the same thing by blacking out right lens when displaying left side image and vice versa. It all happens so fast that your eyes cannot detect when the lens is blacked out, and it just looks darker.
Because of this, if you want to get 60 frames per second, you need 60 frames per eye, so a total of 120Hz is needed. I think you need 120Hz for gaming because at 30fps games can feel a bit choppy.
I'm guessing that a 3D TV can get away with being 60 or 70Hz because films usually are 30 or less frames per second, so you only need 60Hz for the 3d to work.
I would assume you could still watch 3D films from your PC if the screen is 3D ready.
Follow up question...why can you not watch a 3D film on a normal 60Hz monitor? Can the images not alternate fast enough?

Thanks for that. SO would a 90Hz 3D TV be ok to work with gaming then in theory 45 FPS to each eye?

I acidentily turned on 3D on my TV the other day it just put 2 images side by side.
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post #4 of 7
Quote:
Originally Posted by passey View Post

Thanks for that. SO would a 90Hz 3D TV be ok to work with gaming then in theory 45 FPS to each eye?
I acidentily turned on 3D on my TV the other day it just put 2 images side by side.

In theory it should work fine, 45 FPS would be enough for most people. However, I'm not sure exactly how the technology works and if 120Hz is a solid requirement or not.
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post #5 of 7
Quote:
Originally Posted by passey View Post

Am i right in thinking that to play games in 3D the TV has to be 120Hz.
So the 3D TV's that are only 70HZ will not work for gaming in 3D.
Would i Still be able to watch 3D films from my pc though?
And why does it have to be 120HZ?
Thanks to any 1 who can answer all these questions.

Hi,
Can you please post a link to the 3dtv in question wink.gif
If it's a 3dtv then you can get 1080p/60hz = 60fps 3d gaming, wether that's sbs, over under, checkerboard or interlaced 3d.
From what i believe all 3dtv's use fake refresh rates so a 120hz 3dtv is'nt really a 120hz input like a 3dvision monitor, however because of the way 3dtv's work you can send 2 images in one frame at 60hz which the tv will multiply 2x giving 120hz, 60hz per eye which is a solid 60fps if your system can handle it.

You've lost me at 70hz and 90hz, link to tv would be helpfull wink.gif
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by OcSlave View Post

Hi,
Can you please post a link to the 3dtv in question wink.gif
If it's a 3dtv then you can get 1080p/60hz = 60fps 3d gaming, wether that's sbs, over under, checkerboard or interlaced 3d.
From what i believe all 3dtv's use fake refresh rates so a 120hz 3dtv is'nt really a 120hz input like a 3dvision monitor, however because of the way 3dtv's work you can send 2 images in one frame at 60hz which the tv will multiply 2x giving 120hz, 60hz per eye which is a solid 60fps if your system can handle it.
You've lost me at 70hz and 90hz, link to tv would be helpfull wink.gif

thx for the help

http://www.currys.co.uk/gbuk/lg-dm2350d-23-full-hd-led-3d-tv-monitor-11502352-pdt.html
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post #7 of 7
Thread Starter 
if not a tv then can any 1 reccomend a good 23 / 24" 3D computer monitor not too expensive and will have to get TV viewing card for the pc
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