3D monitors are on everyone’s lips and play in 3D is really fun. We have tested which technology and which monitor is best suited for it.
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We are accustomed to seeing three-dimensional, and for this reason computer games are not realistic. Game manufacturers work with perspectives to give us a spatial impression. Still, not even the best 3D models to offer more 3D, the graphics remain flat. Using 3D monitors, it is possible to move this flat world into the third dimension. Three-dimensionality on the TV, in games or in the cinema works in principle as well as the perception of an actual three-dimensional scene. Each eye sees an image only in 2D, and only these images transform our brain into a three-dimensional image.
For the two-dimensional monitors, it works similarly and two techniques have been established to distribute the two images to the eyes: the shutter technology and the polarization method.
In the shutter technology, the monitor alternately displays the images intended for the right and left eye. If one puts the corresponding glasses on, one gets a three-dimensional and sharp picture. In the meantime, the glasses darkens in each case a spectacle lens. This is so fast that the brain perceives the two different stereotypes as a spatial image.
The 3D monitors in the test, which use this method "shutter" at 120 Hz, thus 60 Hz per eye. Due to the rapid change of 60 images per second and eye, it is fast enough that we do not perceive the alternating blackout of the spectacle lenses as flicker.
Unfortunately, the glasses swallow very much light, after all, one eye is always darkened. Even the "open" glass does not let the light through one hundred percent and so the picture is dark and loses contrast. Another drawback with this method is that the graphics card must calculate twice each image.
For this reason, only owners of current midrange and high-end graphics cards can benefit from 3D games. Nvidia offers a pair of shutter glasses and a transmitter for his cards. The advantage: the Nvidia drivers already support a lot of 3D games.
The second technique, the polarization method, uses the combination of special monitors with polarized spectacles to produce stereoscopic images. In contrast to the eyewear, the polarizing glasses function passively, without power consumption and without an infrared transmitter.
However, this 3D technique has a serious disadvantage compared to Nvidia's shutter glasses: the viewing angle dependency. As soon as you move the head up or down during play, the image becomes blurred. In addition, the so-called "Aufpixeln" in games plays.
The reason for the retouching is the necessary interlacing - two images must be displayed at the same time - lower resolution: with a 1680x1050 monitor, the vertical resolution halves to 525 pixels.
Because both images are billed twice, whether they are full-images or line-wise interlaced half-images, the crosshair in shooters is sometimes doubly visible (as ghosting) or even shifted due to the simultaneous representation of two views and their horizontal deviation And the manufacturers of polarizing spectacles provide a software that is a so-called 3D crosshair, which can also be used in 3D games. However, this software is not allowed or supported by most games with anti-cheat mechanisms, such as punkbuster.
Examples are Unreal Tournament 3 or Call of Duty 4. If you're a committed first-person shooter fan, you should leave your fingers on 3D because the normal visors are practically unused.
The polarization process is much better from the 3D quality, but the lack of supported games and the angle of view dependency is a big drawback. In both techniques, the software still seems to be in the children's shoes.
Whether Nvidia, iz3D or TriDef - all still have bugs to fight. The Nvidia solution currently makes the most mature and stable impression. We tested the best 3D-enabled monitors in the lab.
With the Color Analyzer CA-110 and the measuring robot we record the luminance distribution at 230 Candela and create a 3D model from it. This enables us to gain insight into the uniformity of the image and to detect irregularities. We measure the viewing angles between 0 and 90 degrees and record the color components of pure white as well as the luminance at each step.
The CS-2000 spectroradiometer from Konica Minolta allows us to precisely determine the contrast values. As one of the most sensitive measuring instruments on the market, it is capable of detecting extremely low signal strengths as low as 0.003 cd / m².
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