3D Vision Blog

A normal user's look into the world of 3D Stereo Technologies

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3D Vision Active Shutter Glasses and Monitor Color Reproduction

October 19th, 2011 · 2 Comments · GeForce 3D Vision

It is time for results of the interesting testing I’ve done on how the color reproduction of a 3D LCD monitor is affected in different refresh rates and modes – 2D and stereo 3D with the use of 3D Vision. I’ve used Acer GN245HQ 3D Vision ready 120Hz LCD monitor along with an X-rite colorimeter to measure the display characteristics, along with a lens from a pair of 3D Vision glasses to measure through. Notice how the color accuracy as well as the level of brightness changes with and without the 3D Vision lenses in different operational modes of the display, have in mind that the measurements were made directly through the lens with it being in inactive (open) state…

Starting with 60Hz refresh rate, measuring the default color reproduction of the monitor on top and through the 3D Vision glasses on the bottom. The situation isn’t very different, apart from the fact that the brightness gets reduced significantly and there is a bit more difference in the color temperature.

Moving to 120Hz refresh rate, a bit better results with color reproduction as compared to the 60Hz mode, obviously as the monitor is intended to be used with 120Hz refresh rate. Again higher color deviation through the lenses of the 3D Vision glasses, but the most important par here as well is the reduction of brightness with pretty much the same level as with the 60Hz refresh.

The results in 120Hz 3D mode are a bit different though. Even more reduction of the brightness and bigger color deviation, however there is one important thing here and that is the fact that in this mode each eye should be getting different image in 3D mode, so it is hard to exactly measure the results in such a mode, so it is possible that the color reproduction is better than what the calorimeter detects when using the full 120Hz refresh rate in 3D mode to display the same content.

Now, the next thing that immediately comes to my mind is what will happen if I do a color calibration of the display through the lenses of the 3D Vision glasses, how will this affect the monitor’s color reproduction visually and how the image will look without the glasses? Now, since color calibration does not affect the color reproduction in games when you play in full-screen stereo 3D mode you can only make the image look better when you are wearing the glasses and doing something on the desktop. Not that you would need a very accurate color reproduction in games as pretty much all of them were not designed with that in mind anyway. Surprisingly enough after calibrating the display through one of the lenses of the 3D Vision glasses visually the image on the display looked very nice visually when wearing the glasses, apart from the reduced brightness that is expected anyway. And when not wearing them the image on the screen also looks very nice visually, only the color temperature is more significantly off to the colder bluish levels.

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Planar SA2311W, a New 23″ 3D Vision Ready 120Hz LCD Monitor

November 4th, 2010 · 8 Comments · GeForce 3D Vision

Certainly an interesting move, coming from one of the leaders in high-end stereoscopic 3D monitors, Planar Systems, that is soon going to have a 23-inch 3D Vision compatible LCD monitor. The Planar SA2311W 3D monitor is a single panel solution with a 120Hz refresh rate and Full HD resolution, designed more for 3D entertainment than work, unlike the much more expensive stereo 3D display that the company offers and that are made to be used for professional work with S3D content. The new 3D LCD monitor form Planar is designed to be compatible with Nvidia’s 3D Vision active shutter glasses and although still not a lot of details about it are available, it is most certainly something to look for with interest. Planar has announced December as a release date for their SA2311W 3D monitor with a price of $449 USD. There is still no support for it in the latest 3D Vision drivers, but we’ll probably see it added in the next update as there is one month before the monitor will actually be available on the market. One thing that I’ve noticed about this upcoming monitor is that it will have a built-in function to control the OverDrive (OD) right inside the normal OSD menu… which is good as it should help in getting better image quality when in 2D mode.

Planar however did not stop at only a 3D Vision ready monitor, but also have designed a special keyboard for professional users of 3D monitors such as the Planar SA2311W 3D monitor (this is not talking about a gaming keyboard). What is interesting about this keyboard is that it offers seven adjustable light levels (plus off function for the backlight of course), so that you will be able to adjust it in order to see your keyboard’s keys through active LCD shutter glasses. One of the issues that is associated with the use of active shutter glasses is that they block some of the light reaching your eyes and when you work in darker environment, even if your keyboard has a backlight for the keys you may have trouble seeing which key is which through the glasses. So the Planar ProGlow keyboard is here to help, by offering a classical and reliable design along with blacklight that can allow you to still see the markings n the keys clearly through your glasses and in cool green color. The only not so good thing about this product is the price you’ll have to pay for it which is $185 USD.

For more information you can check out Planar’s website at the 3D monitor product page…

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Acer to Soon Have More Interesting 3D-capable LCD Monitors

October 4th, 2010 · 15 Comments · General 3D News

The company was among the first to release a 120Hz 3D-capable LCD monitor with Full HD resolution and it seems that Acer is also on track to be with another first on the 3D LCD monitor market – this time with HDMI 1.4a capable 3D-monitors. Acer is preparing to release two new models – one with passively polarized 3D glasses and another one designed for Nvidia’s 3D Vision active shutter glasses and here we are talking about 23.6″ models. However the company is also working on a 27-inch model with 3D capabilities and it seems that Acer will be there first, beating the already announced 27″ Asus monitor that seems to be getting some delays and will probably be available sometime next year. Acer is expected to officially announce and after that soon to have on the market the three new 3D-capable monitors by the end of this year or early beginning of 2011 with the 27-inch model coming a bit after the new 23.6″ models.

So far everything seems good, I mean that a lot of people were asking for 3D-capable 120Hz LCD monitors that will also support the already gaining popularity HDMI 1.4a-based stereo 3D specifications. This in theory means that you will be able to connect not only your 3D PC to these monitors and play stereoscopic 3D content on it, but also your 3D-capable PlayStation 3 console, a Blu-ray 3D standalone player or a set top box that supports 3D TV and so on. And that is actually good, considering the fact that these 3D-capable LCD monitors do come quite more affordable compared to a 3D LCD HDTV or 3D Plasma HDTV, although with not so good panel and/or display size.

When considering to use the more affordable 3D display using a special polarizing filter applied on the LCD panel and a pair of passive polarized glasses to get the 3D effect you will pretty much not have any problem (in theory) with the 3D content coming according to the HDMI 1.4a stereo 3D specifications for frame packaging the left and right video frames. There should be no problems due to the fact that you don’t need active shutter glasses here that must be in sync to the content being displayed on the screen, although with the passive solution you will have to sacrifice half of the horizontal lines in terms of resolution which is not the case with the displays using active shutter glasses.

But if we consider the 120Hz 3D LCD monitor that is designed to be used with Nvidia’s 3D Vision shutter glasses things may become a bit messy, because you need to have the IR transmitter plugged in a USB port and a driver installed in order have them working in sync with the 3D image being shown on the screen. This works without any problems on a PC, since there are drivers for the infrared transmitter available for the PC, but what happens if you want to use the monitor with your PS3 console or any other device that outputs stereo 3D content through a HDMI 1.4a-compliant interface? It seems that the 3D Vision glasses will not be able to properly sync and thus will become unusable, unless some other solution is found like for example the monitor getting a built-in IR transmitter for the glasses that can also provide the proper signaling to the glasses if it is getting 3D content over the HDMI 1.4a interface. This is still something that we don’t know and we’ll probably have to wait a bit more for Acer to give us some more details about their upcoming products and if they’ve found a solution for that possible issue.

And when talking about the HDMI 1.4a stereo 3D specs there is another possible issue that however is not present in the currently available 120Hz 3D LCD monitors that use Dual-Link DVI interface for connection the PC. The limited bandwidth and the availability of only 24Hz per eye 3D mode for 1080p resolution that is present with the HDMI 1.4a (of course designed for movies) as compared to the 120Hz mode in Full HD that is available when using Dual-Link DVI interface. I suppose that the DL DVI will still remain as a main interface for the PC users and the stereo 3D support over the HDMI 1.4a will be used for consumer electronic devices like consoles and movie players, but that is also something to keep an eye on. I’m sure that nobody will be willing to trade the 120Hz Full HD support for HDMI 1.4a connectivity with stereo 3D support, however having both on a product is something to look for. I’m going to keep following on that to keep you posted as soon as more information becomes available…

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