3D Vision Blog

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

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Entries Tagged as 'GeForce 3D Vision'

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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Nvidia 3D Vision 2 Glasses and 3D Lightboost Technology Q&A

October 18th, 2011 · 8 Comments · GeForce 3D Vision

Are 3D Vision 2 glasses compatible with 3D TVs?

No, 3D Vision 2 glasses are designed to work with 3D Vision monitors, notebooks, and Nvidia IR emitters.

How does 3D LightBoost technology work?
NVIDIA 3D LightBoost works by controlling the panel backlight to only turn on when the LCD screen contains a ghost free-image. Since that is a short period of time, the NVIDIA GPU can turn the backlight on with higher energy which results in increasing 3D brightness.

Will the first-generation 3D Vision wired/wireless glasses work with 3D LightBoost monitors and notebooks?
Yes, all 3D Vision glasses work with 3D LightBoost and will receive the benefits of brighter 3D. Also all glasses are 100% compatbile with all existing NVIDIA IR emitters.

Can existing 3D Vision monitors or notebooks be updated to support 3D LightBoost, via a firmware update, for example?
No. 3D LightBoost technology needs to be designed into new monitors and notebooks, it is not only done with new firmware.

Does NVIDIA 3D LightBoost work over HDMI 1.4 3D when connected to a Sony PlayStation 3, Blu-ray 3D Player, or set top box?
Yes, the 3D LightBoost technology will work over HDMI 1.4 3D as well and all content will receive the benefits of brighter 3D – games, movies etc.

Will 3D Vision 2 glasses work with existing 3D Vision Ready monitors, notebooks, and USB IR emitters?
Yes, users will be able to use the new 3D Vision 2 glasses with existing 3D Vision Ready monitors and Nvidia IR emitter. However, to experience NVIDIA 3D LightBoost, they will need to purchase a new a 3D LightBoost compatible monitor or notebook. Without a 3D LightBoost compatible monitor the glasses will perform no different from the first generation of 3D Vision.

I currently own a Toshiba Qosmio X750/X755 notebook, and the display seems brighter than typical displays. Is this 3D LightBoost technology?
Yes, Toshiba included 3D LightBoost in the Qosmio X750/X755 notebook. However, they decided to ship this notebook before the availability of 3D Vision 2 glasses, which means that users will not be able to fully experience the technology. This is why Toshiba didn’t announce 3D LightBoost support at the time of launch.

Where can I find a list of monitors and notebooks that support 3D Vision 2?
Please check the 3D Vision website for more details http://www.nvidia.com/object/3d-vision-glasses.html

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Comparing the Lens Size and Weight of the 3D Vision 2 3D Glasses

October 16th, 2011 · 3 Comments · GeForce 3D Vision

We know that with 3D vision 2 active shutter glasses Nvidia has increased the size of the lenses used by 20%, but what this means in terms of the increase of the width and height of the lenses? On the photo above you can see 3D Vision 2 (left) compared to MonsterVision Max 3D glasses (right) with the Monster glasses being the ones with the biggest lenses I’ve seems so far among active shutter glasses. On the photo you can see that Nvidia’s new 3D glasses are almost catching up to the Monster’s 3D glasses in terms of size, so here is the width and height of the visible size of the lenses between these three 3D glasses, measuring roughly the size with the minimum and maximum height and width:

3D Vision:
Lens height – 26-32 mm
Lens width – 36-54 mm

3D Vision 2:
Lens height – 30-35 mm
Lens width – 36-58 mm

MonsterVision Max 3D:
Lens height – 30-41mm
Lens width – 38-58 mm

And since the lenses of the glasses are not with an exact rectangular size it is harder to confirm these 20% size increase between the first and second generation 3D Vision, but let us believe Nvidia on this one. I was personally more interested by the fact that the lenses of the new 3D Vision 2 glasses have roughly the same width as Monster’s 3D glasses, although they are not as high. This is a good news, considering the fact that all 3D Vision ready 3D LCD monitors are wide aspect ones, but with 3D projectors there are still quite a lot of models with 4:3 or 16:10 aspect ratio and for these bigger not only in width, but also in height lenses can be considered better.

And now for what is the weight of the old and new 3D Vision shutter glasses. As you can see from the photos, the 3D Vision glasses (on top) are a bit lighter at about 51 grams and the new 3D Vision 2 glasses (on the bottom) have a bit of extra weight for a total of about 56.2 grams. Not much of a difference, but the weight is increased a bit. According to Nvidia the new glasses should be able to provide you with up to 60 hours of usage on a single charge, the same amount of time you get with the revised version of the old 3D Vision glasses. As I’ve already mentioned in a previous post the new 3D Vision 2 glasses use a built-in 70 mAh lithium-ion rechargeable battery. And just as a comparison some of the 3D HDTV manufacturers have managed to reduce the weight of their active shutter 3D glasses to less than 30 grams (with less usage time on a single charge however), so there is more to be desired in terms of weight reduction for the next generation… ;)

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