3D Vision Blog

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

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Make Your Passive 3D Monitor or 3D HDTV Work with 3D Vision

February 11th, 2012 · 176 Comments · GeForce 3D Vision


Not that long ago Nvidia has introduced their “Optimized for Geforce” program that allows some certified passive 3D monitors such as Acer HR274H and Acer GR235HA to work with the 3D Vision video drivers, allowing you to use the full 3D Vision functionality with a passive 3D display. Prior to that in the old stereoscopic 3D drivers Nvidia had support for passive 3D monitors from Zalman, and although the newer Zaman 3D monitors were bundled with the iZ3D driver and not anymore with 3D Vision, they actually do work with 3D Vision and get optimized for the Optimized for GeForce functionality. If you have a passive 3D LCD monitor or even a passive 3D HDTV that is not supported by 3D Vision (Optimized for GeForce) you can actually quite easily make it work by installing a monitor driver with EDID override that will tell Windows and the video drivers that you actually have a different compatible display.



Here is an example using LG’s D2343P passive 3D monitor with installed Zalman ZM-M240W 3D Monitor EDID Override and the LG gets recognized as a Zalman 3D monitor. You need to install the INF driver from the link over the monitor driver you currently have installed from the Windows Device Manager, using the Have Disk option and if when get a warning message just confirm that you want the driver installed anyway. After that you may have to restart Windows in order for things to start working and the Nvidia video drivers to be able to properly recognize and activate the 3D support.



Opening the Nvidia Control Panel and going to the Stereoscopic 3D settings page you should see the “Optimized for GeForce” logo if everything is working properly and clicking the Test Stereoscopic 3D button should bring the Nvidia 3D test on the screen that should be working just fine when you put on the passive 3D glasses that came with the monitor. After that you can the 3D Vision Photo and Video Player and even play games in stereo 3D mode just like you would with an active 3D display and with the 3D Vision glasses. Of course using passive 3D would mean that you would have some limitations like the half vertical resolution when in 3D mode, the lower vertical viewing angle etc., but still you will be able to use passive 3D displays with your Nvidia graphics card and with all the features that 3D Vision offers, an not only with the iZ3D or the DDD TriDef 3D drivers, so you will simply have one more alternative available. I’ve tested this method and it works just fine even with the latest 295.51 beta video drivers from Nvidia, so you should have no trouble making it work. If you try this on your passive 3D setup, feel free to share your feedback and how it works with your specific 3D hardware, thanks to Butmuncher for finding out about this method.

Update: Since the Zalman EDID override does not support audio for HDMI connection to the monitor, you should use this driver only for DVI connection to the passive 3D display. If you wan to use HDMI connection and have audio over the interface as well, then you should install the Acer EDID override driver. Both INF files are included in the archive below, and special thanks to Greg Gilbert for providing the dump from the Acer HR274H display.

Here you can download the EDID override INF files that you would need for this to work…

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LG’s new Cinema 3D Passive 3D Monitors, the D41P and D42P Series

April 26th, 2011 · 8 Comments · General 3D News


LG Electronics just announced the release of two Cinema 3D monitors series – D41P and D42P – using LG’s new Film Patterned Retarder (FPR) 3D technology (passive polarization filters) that was just recently announced in the new line of LG Cinema 3D HDTVs. LG claims that with their FPR 3D technology, the 3D monitors offer brighter and clearer images, and a “Flicker-Free” certified 3D picture that according the company makes 3D viewing more comfortable and eliminates the “occasionally caused dizziness and nausea among viewers” when watching 3D monitors using shutter glasses. You should however consider the fact that the flicker with shutter glasses is not the only thing that may lead to side effects and unpleasant feeling in the viewer, badly made stereo 3D content is actually the most usual cause.

Out of the first four monitors from the new D41P and D42P series – D2341P, D2242P, D2342P, D2542P, only the first one comes with just D-SUB and DVI-D connectivity (D2341P) and the other 3 models also feature support for HDMI 1.4. The LG D2341P is a 23-inch Full HD 3D monitor, the LG D2242P is 21.5-inch Full HD 3D monitor, the LG D2342P is 23-inch Full HD 3D monitor and the LG D2542P is 25-inch Full HD 3D monitor. All of them use TN panels with LED backlight, meaning more affordable price, have 5ms response time, 1000:1 contrast ratio (5 million to 1 dynamic) and provide up to 250 cd/m2 maximum brightness in 2D mode and 100 cd/m2 in 3D mode. The LG Cinema 3D monitors will be launched in Korea today and will be rolled out globally early June starting in Europe.



All four new models from the D41P and D42P series will be bundled with DDD’s TriDef 3D software that will be ensuring the stereoscopic 3D support for games, as well as 3D video playback and the 2D to 3D video conversion functionality. The TriDef software is universal, meaning it will work with both AMD/ATI and Nvidia-based GPUs and the models with HDMI 1.4 interface should be compatible with consumer 3D electronics such as PS3 consoles or Blu-ray 3D players. Have in mind that these monitors are not compatible with either 3D Vision or the 3DTV Play software from Nvidia and will not be made compatible in the future as well.

The main advantage of the use of passive polarizing filters is that it brings down the cost of the display and makes the glasses much more affordable as they do not need any electronics, just two plastic filters with different light polarization. The drawbacks are mostly the limited vertical resolution (the halved number of horizontal lines per eye), as each eye perceives only 1920×540 pixels, something that could bring some issues with distinguishing finer details and small text in 3D, as well as the significantly limited vertical viewing angle of the display when in 3D mode as compared to the angle in 2D.

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