3D Vision Blog

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

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Playing With the Service Menu of ViewSonic VX2268WM LCD Monitor

June 11th, 2010 · 9 Comments · GeForce 3D Vision


After the good results I got with the Service Menu on the Acer GD245HQ / GD235HZ in terms of reducing ghosting a few days ago, I’ve decided to try the same approach with the Samsung 2233RZ and ViewSonic VX2268WM. Unfortunately the Service Menu on the Samsung does not offer a lot of options to play with, but the story with the ViewSonic is completely different… the Service Menu it has is quite extensive, but unfortunately nothing else besides lowering the brightness level helped in reducing ghosting here. I’m saying that with a bit of disappointment and to warn you that there is not specific need to tweak the options available in the Service Menu, especially if you don’t know what you are doing! On the photo above you can see how the Service Menu on the ViewSonic VX2268WM looks like and what options it has available…



Now, on the first photo the Service Menu looks just fine, while the monitor is running at 60Hz refresh rate, but when you switch to 120Hz and call up the Service Menu it will look as on the photo above… it gets a bit messed up, although fully functional, and it is harder to change the options, so if you want to adjust something better do it at 60Hz.



With that said lets get to the point on how you can access the service menu on the ViewSonic VX2268WM, just another waring that you should not play with options that you are not well aware of their functions. It is best to take a photo of the initial settings, so that if you mess things up you will be able to return them back to their normal levels, before you started messing up with the values.

Accessing the Service Menu on ViewSonic VX2268WM:

– You start by turning off the monitor if not already off
– Press and hold the first menu button and then press the power on button
– Wait a few seconds while holding the 1st button pressed (the leftmost one), until you see the image on the screen
– Press the first button as you usually do to call up the menu and you should see an additional option at the top
– By default the new F icon at the top is selected, so you can press 1 to enter the service menu
– When you finish with the service menu just press the power button to turn off the monitor and then again to turn it on normally

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Reducing The Ghosting On Acer GD245HQ / GD235HZ 120Hz Monitors

June 6th, 2010 · 63 Comments · GeForce 3D Vision


The crosstalk or ghosting of images (leaking of part of the image for the left eye into the right eye and vice versa) is a common problem with the current generation of 3D-capable 120Hz LCD monitors with different factors influencing it. One of the common issues is that the LCD panels are still not fast enough in terms of response time and because of that the monitor manufacturers resort to the so called Overdrive function (using more voltage to drive the pixel change state faster) in order to increase the pixel response rate. This works to some extent, but may as well lead to other issues like burnt colors resulting in colored ghosting visible in stereo 3D mode for example. Another common cause for ghosting is having brighter colors on darker backgrounds or vice versa, especially if the separation between the left and the right eye is higher. And then again there is the so called top and bottom ghosting that represents more ghosting on the top and at the bottom of the screen that is usually caused by not so good timing with the image on the screen and the shutter glasses. And since I’ve been trying different methods of reducing ghosting lately, here comes another effective solution that can help you reduce the ghosting when playing in stereo 3D mode with an Acer GD245HQ or Acer GD235HZ 120Hz LCD monitors. The solution is based on custom modifying the color temperature levels of the monitor from the Service Menu that is usually not available to the normal user, but you can call it if you know how to do it. The good news is that the same method might also work with the ViewSonic VX2268WM (I’m already working on that, so stay tuned), but will unfortunately not help the owners of the Samsung 2233RZ as the Service Menu of that model is not so good in terms of additional controls available.

Lets get back on the Acer. For the following examples I’ll be using a short demo video shot by the user 3D Frank shared over at Nvidia’s 3D Vision forums that is a great example for ghosting, you can find a download link at the bottom of the post if you wish to try it on your monitor. Have in mind that the following ghost reduction method works not only when watching stereo 3D videos, but also with 3D photos and when playing games in stereo 3D.

And here is how you can call the Service Menu on the Acer GD245HQ / GD235HZ:

– Turn off the monitor
– Press and hold the first menu key (the leftmost one)
– Press the power button while still holding the 1st menu key
– When you see the image on the screen you can release the menu key
– Press the third menu key (the middle one) to call up the Service Menu
– Navigate in the service menu just like in the normal one, but now all options are changeable
– To return back to the normal mode just turn off the monitor and turn it back on the normal way



Lets me start with how the display looks by default when showing a stereo 3D image and you are not looking through the shutter glasses. The blue menu in the top left corner is the service menu that is showing the default options for the display, as you can see the Overdrive (OD) function is active and on the screen you can practically see doubled images of the boats and burnt out colors of the most bright white on the sailboats.



When you put on the glasses instead of doubled sailboats you’ll start seeing ghosting which looks like shadows as you can see on the picture above taken through the right lens of the shutter glasses. Again here we still have the Overdrive function of the display active.



Now lets see how the things look when the Overdrive function is disabled. Without the shutter glasses on the image still looks doubled, but there are no burnt colors. Other than that no significant difference can be noticed with the named eye…



Overdrive is still disabled, but now looking through the glasses you can see significant difference in the image as compared to looking through the shutter glasses with the Overdrive function enabled. Instead of just some shadows the ghosting here is so severe that you still see doubled objects, although a bit more faint than when looking without the glasses. This is just to give you an idea of what can happen when the response time of the pixels is not good enough and why monitor manufacturers are using Overdrive on the LCD panels.



Now comes the fun part. I’ve decided to use the Cool temperature preset available in the Service Menu to modify in order to reduce the ghosting. So the new settings that I’ve defined for it are 100 for Red, 90 for Green and 85 for Blue. Although I’m using the Cool preset my settings are warmer because the Red color is higher (you can decrease it to about 85-90 to get cooler temperature), but I prefer the Warm color temperature and this makes it easier to compare it with the default Warm preset.



After doing the tweaking of the Cool preset from the Service Menu of the monitor you need to turn off the monitor and then turn it back on normally to get to the normal monitor menu, where you need to select the Cool preset in the Colour Temp settings in order for the things to work and you to have less ghosting. You can cycle between the Cool and Warm color presets to see the difference, the Warm preset should have easily noticeable color ghosting while the custom Cool preset should have hardly any visible ghosting.



And so how does the tweaked settings look like in terms of ghosting, you can see in the picture above taken through the right lens of the shutter glasses. There is hardly any visible ghosting left, although if you look up close and carefully you may still notice some very faint traces, but that should not bother you when using the monitor normally as it is hardly visible anymore.

Before and after this tweak you can try a game like Tomb Raider: Underworld with a separation of lest say 50%-100% (depending on how much you can handle) in order to have high separation and to compare the ghosting. You will however see that there is still some top monitor ghosting, it seems unaffected as it is probably caused by synchronization timing issue whit the shutter glasses and that is why the above tweak does not affect it. Still the end result where you don’t have burnt colors, color ghosting and almost no ghosting at all is completely worth it if you ask me, so if you own an Acer GD245HQ or Acer GD235HZ monitor I recommend you try my tweak and report your results in the comments below.

And just one more thing I’ve noticed about the Acer while playing with the “ghostbusing” settings in the Service Menu of the monitor. When you turn on the monitor and immediately display a stereo 3D image you’ll most likely see more ghosting, but after 2-3 minutes the visible ghosting gets reduced a bit. This means that it probably takes a few minutes for the electronics in the monitor to start working at its best with the Overdrive function performing optimally…

Download the Sailboats Ghosting Testmirror 1

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