Update 7/21/11 Mocca over at Nvidia 3D vision users forum has pictures of the color ghosting bug and found the problem out months ago.http://forums.nvidia.com/index.php?showtopic=198189
Update 7/23/11 New test parameters for testing Color Ghosting shown below in Section II.
7/23/11 New firmware update has improved lag in 3D mode with PC label.
10/26/11 LG Cinema 3D TV users outside of US region have PC label mode with fixed 50 sharpness which causes grey ghosting
I've been testing my LG 55LW5600 tv for ghosting test and it does well for frame-packing mode and Side by Side mode but it does not pass the Interleave native mode and checkerboard mode of the TV.
As you know, the LG TV screen film pattern retarder is divided into 1080 lines vertically, 540 lines are delivered to the left eye, and 540 lines are delivered to the right eye. So when you use software that sends the information to the screen aligned to the FPR, the effect of 3D should be shown on the screen similar to previous computer 3d monitor such as the Zalman 22 inch passive display.
The problem is that there is some video processing that occurs or the calibration of the tv is not tuned correctly and the user of such mode gets too much ghosting.
There are many different ways to reproduce this ghosting. I will show two different ways to display this problem.
Method 1) Watching movies
The first way is to playback an mkv of a movie or 3d clip in Stereoscopic player in Interleave mode Left line first and watch the scene for ghosting and then compare it to Side by Side mode and you will see there is no ghosting in Side by Side. The same can be done when using 3D DLP mode in the option which is checkerboard mode and this mode has the color ghosting bug as shown in Section II.
Method 2) Playing Games
This method can be recreated by using my guide at http://forum.iz3d.com/viewtopic.php?t=5205
I will sum it up here. Basically, with the IZ3D drivers set to Interleaved Mode, the game should display 540 lines to the left eye, and 540 lines to the right eye. The game will show a 3d effect with ghosting that does not occur when I set the 3D drivers to Side by Side mode. When I set it to 3D DLP mode, again checkerboard mode, I also see 3D but there is even more ghosting in this mode compared to Interleaved mode. This is the color ghosting rejection problem for checkerboard as outlined in Section II.
Most users that watch Blu Ray 3D or TV will not see this ghosting because they are encoded in HDMI 1.4a Frame-packing mode or Side by Side mode.
I know that Vizio passive 3D users have this problem too because I checked with other users to see if they had the same ghosting in Interleave mode. The problems are all within the scope of the FPR TV so maybe there can be someone at LG that can look into this since they are the manufacturers of this FPR technology.
I am including ghosting test that I recorded in a dark room for Side by Side mode, notice no ghosting in this test. I am using the left lens of the glasses to look for ghosting.
And here are the test in Checkerboard mode that show the information seen from the left lens only and shows the ghosting that is not resolved fully.
I hope that LG will look into this matter ASAP.
Update 7/23/11 Test for checkerboard 3d using video
Alright, I now have two full ways of verifying this color ghosting bug for Checkerboard 3D on the LG. What they both show that during the ghosting test, they pass the greyscale ghosting but do not pass the color portion of the ghosting test. That means LG calibrated this test with greyscale only and needs to add on color ghosting test to see this.
Program required: Stereoscopic Playerhttp://3dtv.at/Downloads/StereoscopicPlayer173_en.msi
Test #1: Download test clip 1 Link to clip http://www.box.net/shared/lpe35vy1h8
1. Run the 3d player with Viewing Method 3D Ready DLP-TV
2. Play movie clip and pause it.
3. Press the 3D button on the LG remote and select the checkerboard pattern.
4. Notice with the left eye only watching with 3D glasses you should not see anything that should be on the second half bottom of the screen. Except you do and its only the Red, Green, Blue, colors from the "Image from Right Eye". That's the color ghosting confirmed right there.
5. Turn off the 3D button now.
6. If I switch the Viewing method to Row Interlaced, Left Line Top and view this now with the left eye only watching with 3D glasses everything on the bottom row should be black completely. (Assuming your calibrations are all correct) ***Vizio users select Row Interlaced, Right Line Top***
This proves color is the main component that is incorrectly showing through both eyes in checkerboard.
Test #2 Download test clip 2 link here http://www.websaitti.com/kuvat/3dtv/3d_crosstalk_test_02.wmv
1. Run the 3d player with Viewing Method 3D Ready DLP-TV
2. Press the checkerboard button on LG remote and play clip 2.
3. Notice this time through clip you must use the right eye lens of the glasses only and watch the clip completely.
4. You will notice that the right eye with glasses only cannot see the numbers for Grey, but will see them for all the colors, Red, Blue, Green.
That is the ghosting problem, this test is to see if there is color rejection but it does not pass the checkerboard test.
5. Turn off 3D on the remote.
6. Now switch the Viewing Method to Row Interlaced, Left Line Top and again using the Right eye lens only you will see that all the numbers in the colors will disappear which proves the problem is with checkerboard 3D format only. No numbers means there is no ghosting and color rejection is working properly so now I have a definitive way of testing for color ghosting. ***Vizio users select Row Interlaced, Right Line Top***