LG D2342P 23" Passive 3D LED LCD Monitor - Page 7 - AVS Forum
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post #181 of 260 Old 12-23-2011, 10:20 PM
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Quote:
Originally Posted by Gae View Post

Bill, I've managed to adjust the above over HDMI mode. I think you might have to stop the 3D Blu-Ray disc first though. I think PC mode works OK though...you have the option of adjusting either the Monitor and/or graphics card video settings of course.

Gae


I want to adjust while watching 3D. Changes one makes when out of 3D mode don't seem to carry over.
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post #182 of 260 Old 12-24-2011, 02:40 AM
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made a yt3d unboxing vid of the LG D2342 (shot on a Fuji w3)
http://www.youtube.com/watch?v=daF6QUOAtso

yay! btw spoilers- the zalman glasses DO work
indeed they seem to give the exact same results (I found no discernible difference ghosting-wise- at first I thought there was but it's just the head position) - the zalman ones do give a slightly more yellowy/warm tint though
I also tried connecting the Fuji to the LG via hdmi- it worked! at first the screen had blue pixels flashing all over the place but I re-plugged it in and everything was fine. Currently I'm using it to watch yt3d clips- very nice
the zalman had very visible lines- here they are visible if you are extreemly close to the screen when wearing glasses (much more so than normal use)- the screen just appears more "grayer" from a distance. the small text still not as legible of course
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post #183 of 260 Old 12-24-2011, 02:20 PM
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Forgot to respond to you two the other day....

Quote:
Originally Posted by as905 View Post

i disagree the 3D for both gaming & movies (proper HSBS) is magic so yeah you ARE doing something wrong.

You were right! After changing a few settings and switching plugs, I can now see the same amount of depth I saw when using the active glasses. Although, the plug I used before actually had more available bandwidth then the one I'm using now....


Quote:
Originally Posted by yuriythebest View Post

does the depth in games seem "weird" apart from the doubling? probably means you have to swap left/right in your stereo3d driver (iz3d,ddd,etc), or adjust the other settings like convergance/separation.

It was just that I didn't see much depth at all. I have it sorted out now, so no worries on my end. Thanks for the help.


I'm going to have to take back my initial (albeit 'knee Jerk') reaction to passive. It does seem to be the better method overall, once you get your settings right. The loss of the extra boost in resolution and more freedom with your viewing angles, isn't much of a loss.
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post #184 of 260 Old 12-24-2011, 03:37 PM
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Glad you got it sorted it out in the end TreeDee.

With regards the success of 3D, as well as the format and monitor (i.e. passive and LG DM2350D), a lot of the 3D success also has to do with the content and how well it was made. I was just saying to as905 over PM that I have seen both great and weak 3D on this monitor with some content showing evidence of a lot of ghosting, while others hardly having any. I think the original material is just as important as how you view it and what display you use.

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post #185 of 260 Old 12-29-2011, 07:23 PM
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Currently using the 2350 monitor with the HDMI hooked up to my PS3. I can't seem to get the settings right just for this system to minimize crosstalk/ghosting (and to an extent with my PC which is hooked up via DVI). I have my 360 hooked up via VGA and I'm getting next to none but then I'll switch over to my PS3 and get tons. I must be doing something wrong because while I realize crosstalk is inevitable there seems to be an excessive amount present in PS3 games versus 360 games.

I'm currently running the PS3 settings at about: 30% backlight, 60% Contrast, 35% brightness (TV brightness), 70% sharpness, 50% Color, 0 Tint, Medium Color Temp, Dynamic Contrast Off, Dynamic Color Off, Gamma High, Black Level Low, and Film Mode On. I'm using Uncharted 3 as the test game and in it I'm running at 50% 3D intensity and 60% brightness. The PS3 itself is set to believe that it is a 23'' monitor.

Any help would be appreciated as I really want to enjoy the wide array of PS3 titles that support 3D and don't want the mode to just go to waste on Gears of War 3.
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post #186 of 260 Old 12-30-2011, 11:05 PM - Thread Starter
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Quote:
Originally Posted by Deegs View Post

Currently using the 2350 monitor with the HDMI hooked up to my PS3. I can't seem to get the settings right just for this system to minimize crosstalk/ghosting (and to an extent with my PC which is hooked up via DVI). I have my 360 hooked up via VGA and I'm getting next to none but then I'll switch over to my PS3 and get tons. I must be doing something wrong because while I realize crosstalk is inevitable there seems to be an excessive amount present in PS3 games versus 360 games.

I'm currently running the PS3 settings at about: 30% backlight, 60% Contrast, 35% brightness (TV brightness), 70% sharpness, 50% Color, 0 Tint, Medium Color Temp, Dynamic Contrast Off, Dynamic Color Off, Gamma High, Black Level Low, and Film Mode On. I'm using Uncharted 3 as the test game and in it I'm running at 50% 3D intensity and 60% brightness. The PS3 itself is set to believe that it is a 23'' monitor.

Any help would be appreciated as I really want to enjoy the wide array of PS3 titles that support 3D and don't want the mode to just go to waste on Gears of War 3.

I have the LG D2342P which has a front panel selectable 3D mode selection in the menu that affects 3D performance quite a bit. Does the 2350 have a similar menu setting?

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post #187 of 260 Old 12-31-2011, 01:46 AM
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ok i received my D2342P yesterday thats 1 day after sending the DM2350 back,i'm extremely happy that i managed to get the results i always wanted specially in 3D which now scores 10/10 from me

the connection i'm using is DVI as HDMI is utter useless if you want perfect 3D from PC. i'm also using a great software called power dvd which 3D wont be the same without. i also tilted the screen back a couple of inches & adjusted the chair height.

both 2D & 3D score 10/10 from me & this brilliant little gem from LG scores 8/10 due to the stand,although it's somewhat a weak stand it still gets the job done & overall its a much better screen than the DM2350 (Colours & PC 2D & 3D performance are BETTER).

this thread has helped me a lot so thanks to all who participated in it specially the Thread Starter Richard,Gae & many thanks to AMAZON for top notch customer service.


oh by the way guys the cheap available 3D glasses wont work with these LG monitors even the ones made for the LG 3D TV's you will see ghosting & no clue why LG has not made any 3D glasses available for us to buy from retail shops ?? but the good news is there is exact match made by ZALMAN & the model number is ZM-SG100G if you need more glasses then buy the ZALMAN's before they go out of stock! hope this info is useful to someone
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post #188 of 260 Old 01-02-2012, 02:51 AM
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Quote:



oh by the way guys the cheap available 3D glasses wont work with these LG monitors even the ones made for the LG 3D TV's you will see ghosting & no clue why LG has not made any 3D glasses available for us to buy from retail shops ?? but the good news is there is exact match made by ZALMAN & the model number is ZM-SG100G if you need more glasses then buy the ZALMAN's before they go out of stock! hope this info is useful to someone

And as I mentioned via PM, the cheap RealD glasses work too of course.


I've been reading these recent replies about crosstalk (ghosting) with great interest. I too have noticed that the ghosting appears worse over HDMI than VGA quite often. 3D Blu-rays via HDMI and other 3D HDMI sources seems to frequently display a kind of glassy ghosting (especially on distant objects). Also, I get brightness fluctuations while watching 3D Blu-rays via BD player over HDMI. This doesn't happen with anything else only 3D Blu-ray movies.

Of course there is another issue with ghosting with regards the source material. As I have seen great 3D demo material with almost zero ghosting, the deduction is that these monitors using the passive LG 3D Cinema format are capable of producing perfect 3D, when the source material is perfectly done.

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post #189 of 260 Old 01-03-2012, 02:28 AM
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call me nuts but i have decided i no longer going to keep it for few good reasons & these are:
1- its a 60hz screen & as a fps pc gamer i'm used to 120hz gaming,the difference is big for me.
2- 3D gaming is awesome but this half res passive 3D although it works great in call of duty games it looks bad on games like dirt 2 (poor image quality) & the frame per sec is low too.
3- i'm becoming a big fan of 3D movies & passive 3D scan lines do bother me alot.

therefor i have just ordered the samsung 700D which is also a 3D monitor but with active glasses & 120hz panel this way i can enjoy both fast 2D gaming & 3D material. i just hope when it comes its free from defects.
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post #190 of 260 Old 01-05-2012, 01:21 AM
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To add to the warnings about the glasses that have been brought up couple of times, my findings for DM2350 support them. See here:

http://avsforum.com/avs-vb/showpost....5&postcount=10

- when the glasses turned 45 degrees counter-clockwise the ghosting is almost completly gone. Same is with RealD glasses. Bummer.
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post #191 of 260 Old 01-07-2012, 08:37 AM
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I believe there is two different types of passive glasses. Linear polarized and circular polarized and then it's possible each of those could have lenses swapped so 4 really but I think that's less common. Noticed 1 site in japan had swapped lenses for sale but couldn't find any where else.

If ghosting changes by tilting the glasses it sounds like those are linear polarized. My guess would be all these passive sets should use circular polarized and they probably got mixed up at the factory and ordered a batch of linear polarized material by accident and didn't notice it.

I just bought the Acer 27 inch passive HR274H this week from newegg. Not enough people own it yet to have a discussion thread on it.

You folks with the passive LGs wish you had different display settings for 3d? I just got one saved user settings and wish I had 2 and I wish it switched automatically. But the Acer uses Nvidia's 3d drivers in interleaved and the monitor doesn't even know it's 3d so I doubt they would have the automatic switch but 2 user saved settings would of been nice. As of now I just used the preset "eco mode" for my 2d viewing and switch to a high brightness and high contrast saved user setting for 3d gaming.

Also was looking at your guys manual and I noticed "line interlaced" is in the 3d options. On the Acer SBS, T&B & FP are in the options and "line interlaced" you achieve naturally without enabling it in the menu. I hear you can do that on the LG but what is the advantage of doing the menu of "line interleaved" when it can do it without? Does it add L/R switching? Does it look better than not using the menu? The Acer can only do L/R switching with "line interlaced" with the software/game giving you the 3d.
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post #192 of 260 Old 01-07-2012, 11:24 AM - Thread Starter
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Quote:
Originally Posted by quisp65 View Post

I believe there is two different types of passive glasses. Linear polarized and circular polarized and then it's possible each of those could have lenses swapped so 4 really but I think that's less common. Noticed 1 site in japan had swapped lenses for sale but couldn't find any where else.

If ghosting changes by tilting the glasses it sounds like those are linear polarized. My guess would be all these passive sets should use circular polarized and they probably got mixed up at the factory and ordered a batch of linear polarized material by accident and didn't notice it.

I just bought the Acer 27 inch passive HR274H this week from newegg. Not enough people own it yet to have a discussion thread on it.

You folks with the passive LGs wish you had different display settings for 3d? I just got one saved user settings and wish I had 2 and I wish it switched automatically. But the Acer uses Nvidia's 3d drivers in interleaved and the monitor doesn't even know it's 3d so I doubt they would have the automatic switch but 2 user saved settings would of been nice. As of now I just used the preset "eco mode" for my 2d viewing and switch to a high brightness and high contrast saved user setting for 3d gaming.

Also was looking at your guys manual and I noticed "line interlaced" is in the 3d options. On the Acer SBS, T&B & FP are in the options and "line interlaced" you achieve naturally without enabling it in the menu. I hear you can do that on the LG but what is the advantage of doing the menu of "line interleaved" when it can do it without? Does it add L/R switching? Does it look better than not using the menu? The Acer can only do L/R switching with "line interlaced" with the software/game giving you the 3d.

I am using: LG D2342P through the monitor's HDMI input from a DVI to HDMI cable on a nvidia GTX550Ti video card.

For my set up, even with software set to use line interlacing, I see better 3D results when the front panel line interlacing selection is made too. This is easily determined using the LG supplied tridef media player, where the first screen is a still picture 3D image showing long stem roses poking upward and out of the screen in 3D, with a 3D sky that has clouds and depth. I see this improvement with Cyperlink PowerDVD11, "Stereoscopic Player" and with the tridef viewer LG supplied software.

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post #193 of 260 Old 01-07-2012, 04:39 PM
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In the other thread, dedicated to DM2350, I posted this:

I did some more research and found this document, that has a very good explanation of 3D glasses technology: http://www.drt3d.com/W05-Polarization.pdf
On page 13 it states: "From our model for circular polarization, it appears that the linear polarization is the first step for creating the circularly polarized light and it should not have any effect. In practice, it is found that ghosting is slightly increased if not using the "Optimum" glasses. Most people will not notice it and a lot of people are using the "free" Real-D glasses with Zalman and Acer screens and are happy!"


My conclusion is this: TN panels for monitors have the linear polarization layer that passes 45 degree polarized light and then the retardation layer converts the light to circular polarization. I suspect that the IPS panels have the first layer that polarizes light either virtically or horizontally (do not know which exactly, but the bottom line - TN and IPS panels probably differ in this respect) - so it is either 0 or 90 degree and then the retardation layer converts the light to circular polarization. The glasses have similar construction, but the first layer that the light goes through is the retardation layer (to "unscrew" the light) and then it goes through the linear polarizer (to "select" the light). The glasses for monitors (ZALMANs that were mentioned before in this thread) have the linear polarizer that passes through the 45 degree polarized light, while LG Cinema 3D and RealD have the linear polarizer layer that passes, let's say, the light that is vertically polarized.

Most probably the retardation layers, both on the panels and the glasses are not perfect and cannot "rotate" all of the light, so some amount of linerly polarized light bleeds through and that is why it is important that the glasses had the linear polarization layer 90 degrees oriented to that one of the monitor's panel, to extinguish the parazite light.
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post #194 of 260 Old 01-07-2012, 07:08 PM
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Quote:
Originally Posted by speresh View Post

In the other thread, dedicated to DM2350, I posted this:

I did some more research and found this document, that has a very good explanation of 3D glasses technology: http://www.drt3d.com/W05-Polarization.pdf
On page 13 it states: "From our model for circular polarization, it appears that the linear polarization is the first step for creating the circularly polarized light and it should not have any effect. In practice, it is found that ghosting is slightly increased if not using the "Optimum" glasses. Most people will not notice it and a lot of people are using the "free" Real-D glasses with Zalman and Acer screens and are happy!"


My conclusion is this: TN panels for monitors have the linear polarization layer that passes 45 degree polarized light and then the retardation layer converts the light to circular polarization. I suspect that the IPS panels have the first layer that polarizes light either virtically or horizontally (do not know which exactly, but the bottom line - TN and IPS panels probably differ in this respect) - so it is either 0 or 90 degree and then the retardation layer converts the light to circular polarization. The glasses have similar construction, but the first layer that the light goes through is the retardation layer (to "unscrew" the light) and then it goes through the linear polarizer (to "select" the light). The glasses for monitors (ZALMANs that were mentioned before in this thread) have the linear polarizer that passes through the 45 degree polarized light, while LG Cinema 3D and RealD have the linear polarizer layer that passes, let's say, the light that is vertically polarized.

Most probably the retardation layers, both on the panels and the glasses are not perfect and cannot "rotate" all of the light, so some amount of linerly polarized light bleeds through and that is why it is important that the glasses had the linear polarization layer 90 degrees oriented to that one of the monitor's panel, to extinguish the parazite light.

Uggh! Thanks for the pdf. Was interesting but made me feel stupid. So you say we stick glasses on and see things in 3d! Got it!
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post #195 of 260 Old 01-12-2012, 07:37 AM
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That's all well and good but the technicians at LG seem totally oblivious to this fact (of polarization and differences between 3d monitors such as dm2350 and the regular 3d cinema products) and insist that it is not the glasses which are at fault?? I phoned them twice about my dm2350d and purple ghosting. I explained in detail that it goes when i tilt my head to the left and that others had claimed the same and they said it was nothing at all to do with the glasses
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post #196 of 260 Old 01-16-2012, 04:56 PM
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so i got my S23A700D last week & all i can say is i'm very glad i bought it. no flaws what so ever brilliant image quality which can be easly compared to top of the line tv's & it is a 120hz screen too.
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post #197 of 260 Old 01-18-2012, 03:20 PM
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I bought a LGD2542P and I have the same issue about purple ghosting that disapear when tilting the glasses 45° to the left.

I am just not happy and will try to return it.
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post #198 of 260 Old 01-24-2012, 03:19 AM
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Finally I bought the monitor LG D2542P. As mention by many users, it is better than the previous D2342P monitor. It is not only a problem of size, 25'' vs 23'', but the color are more vivid with deeper black. I am still using PowerDVD11 and display 3D movies by chosing the Line Interlaced mode.

I don't see the purple ghosting mentioned by mirak123. The quality is such that I can use it as un standard 2D monitor instead of my ACER GD245HQ I currently use and considered by many experts as one of the best.
I am very happy withi this new LG monitor!
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post #199 of 260 Old 01-25-2012, 09:18 AM
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Hey all! I just bought the LG d2342p-pn monitor as an editing monitor/video production monitor for a feature film I'm about to shoot using the Sony HDR TD10.

We shot some test footage with the TD10 and I brought it home, displayed it on the monitor and it looks great! Unfortunately, when we tried to plug the TD10 directly into the monitor (which we'll be doing during the film), there's only a very very slight 3D effect. Nowhere near what I get at home with the exact same footage (we went into playback mode on the cam).

Could this be the hdmi cable? Does your cable HAVE to be a 1.4? Or are we screwing something up in the settings? We're in HDMI output side by side on the cam and i switched the monitor to side by side.
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post #200 of 260 Old 01-26-2012, 07:04 AM
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My PC is connected to my LG 3D monitors (23'' or 25'') through a HDMI 1.4 cable. The PC is the only video source (2D or 3D) I use, with a standard Blu-ray drive and several softwares, PowerDVD11 for movies (see my last post) or Roxio for my camcorder files.
As a matter of fact I own the 3D camcorder FujiFilm 3D W3. With a 1280x720p resolution, probably not as good as yours, the clips are recorded on a 16 GB SD card. I don't use the proposed USB cable; it is much more easy to take off this SD card from the camcorder and introduce it in the card reader of my PC. Then ROXIO 2011 accepts these rather special files (double avi); we have only to specify the kind of video files we want to produce (2D or 3D). When video editing is completed you can choose the output format, SBS for example, and at this point there is no difference with any 3D movies procedure.
I have never tried to directly connect this camcorder to LG monitors. My HDMI 1.4 cable is a standard one, while the FujiFilm camcorder requires a "mini-hdmi connexion". Moreover I don't see the benefit of such procedure since the video editing is in practice necessary (I am a very bad moviemaker).

I hope I could help you
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post #201 of 260 Old 02-10-2012, 11:51 AM
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HI guys and girls i have the same issue with the purple ghosting some of you have mentioned but my model is actually a cinema 3dtv DM2780D there is also exaclty the same model number DM2780D which is branded as flatron DM2780D 3D LED monitor tv. please check my twitter page about the issue twitter.com/LeeGoodbody

Also email me if u want more information i have videos and performed many tests which i have sent to LG. Am in talks with lg and dealing with the top people in the company
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post #202 of 260 Old 02-10-2012, 11:55 AM
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sorry about my grammer and spelling guys suffer from Dyslexia takes me ages to type a post and probably still dont make semse lol
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post #203 of 260 Old 02-23-2012, 04:23 AM
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I posted in another thread the message I pasted below about 3d glasses quality. Since it's relevant I decided to paste here. I have the 27 inch Acer 3d passive monitor and I didn't notice this until today despite me having this monitor for over a month now, so it's not real noticeable. I'm hesitant to put down a lot of money for some 3d glasses just relying on manufacturers advertising. It would be nice if someone else would rate polarized 3d glasses.

Copied Message:
3d polarized glasses are not all the same. Despite the inherent differences between linear polarized and circular polarized, I've noticed a difference in the amount of polarized light filtered when switching between my LG TV glasses and my Acer glasses. In playing a 3d game I can put my character up against a background with a much different color and contrast and I can notice a slight ghosting at times. If I switch to my LG glasses this ghosting comes through even more. I think there is a bit of light that isn't getting filtered out and being noticed in these situations. Since my higher quality Acer 3d polarized glasses even has light get through, I would still be interested in finding a better pair. When and if this market ever gets better I imagine they will rate these glasses by how efficient they are at filtering the polarized light.

Added later: Turns out I'm wrong, so scrap what I wrote above. I put my LG TV on the Smart app called Yabazam which shows 3d trailers and my LG glasses showed least amount of ghosting and the Acer glasses a lot more. They must be different types of polarization. Funny that they both work on each , it's just in different areas the glasses not designed for each monitor/TV showed ghosting or more ghosting in particular areas.

Added even later: (maybe I need to know what I'm talking about before I post :-D) I can tilt my head with the Acer glasses on when viewing my TV and the ghosting will disappear. Some articles I read state this means they are linear polarized and I wonder if each of the glasses just have the polarization at a different angle. But I'm not sure, maybe circular polarized will show some ghosting with head tilts on big differences in contrast??
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post #204 of 260 Old 02-26-2012, 12:11 PM
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I'm looking to build a 3D surround gaming setup (3 monitors) and I really want to use LED monitors and passive 3D. My Triplehead2go 2D surround system died a long time ago and I have been looking to upgrade. I have been looking at this monitor and the Viewsonic V3D231, I believe they are the only 2 on the market right now (at least at $300/23" price level). The new Viewsonic is supposedly 2ms, so it might be a better option for gaming. I know Nvidia doesn't officially support these monitors for 3D Vision, does anyone have experience setting up 3D surround with this?

Also, I was wondering if a pair of 2GB GTX 560ti cards would give enough power to run it, or if I should just go ahead and use a pair of 2.5GB GTX 570 cards (knowing that I would also have the option to install a third card, an option the 560 does not support). It's about $100 more per card, so I wonder if it's really necessary. I'm guessing that the 560ti might struggle with the newest games in this setup.
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post #205 of 260 Old 02-27-2012, 11:51 PM
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Just received the D2342P today and unfortunately I have the purple ghosting issue. If I tilt my head a little sideways it goes away. I really do not want to go through the hassle of returning this set. Its either that or call LG.
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post #206 of 260 Old 02-28-2012, 01:57 PM - Thread Starter
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Originally Posted by ssgmun5000 View Post

Just received the D2342P today and unfortunately I have the purple ghosting issue. If I tilt my head a little sideways it goes away. I really do not want to go through the hassle of returning this set. Its either that or call LG.

My D2342P is one of the first ones in the USA. To get the best image without ghosting, I use RealD 3D glasses taken home from the theater, and I have set up my monitor with 40% brightness.

I run the "tridef media player" software that came with the monitor. The first screen that comes up is the one used to for assistance in positioning the monitor. On mine, the top of the monitor is tilted away from me, so the bottom edge of the screen is closer. This adjustment is shown on the screen (see page below) that comes up when first starting the media player.

On my unit, I gently pull up on the display while pushing the top edge away from me, in order to set this adjustment.

Also, I use the front panel controls to select the "3D LINE INTERLACED" mode.

There is no ghosting after I do this set up, and the 3D displayed from the positioning assistance has both depth in the sky, and pop out with the roses. When I tilt my head a sideways, the roses on this image seem to move, but with the correct position for my head, there is no ghosting. The range of vertical viewing position for the viewer is very limited, but horizontally, there is room for two people to sit side by side and see 3D, though I do not use it that way.

Has the product being shipped now changed changed from that? I haven't used the LG supplied glasses.
LL

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post #207 of 260 Old 02-29-2012, 10:03 AM
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So after reading all the posts here and at another forum it seems I have the wrong glasses. Spoke to LG about this and they are refusing to acknowledge this as a known issue. Instead of them sending a pair of the correct glasses they want me to send the monitor in. Talk about an inconvenience.


Richard what model glasses do you have and what color are they?
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post #208 of 260 Old 02-29-2012, 04:04 PM - Thread Starter
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Originally Posted by ssgmun5000 View Post

So after reading all the posts here and at another forum it seems I have the wrong glasses. Spoke to LG about this and they are refusing to acknowledge this as a known issue. Instead of them sending a pair of the correct glasses they want me to send the monitor in. Talk about an inconvenience.


Richard what model glasses do you have and what color are they?

I'm not able to say if you have the wrong glasses.

What I can do is describe the glasses I am using.

These are Real D 3D glasses taken home from the theater.

By themselves, the lenses are slightly greyish brown.

If I wear one set of glasses and put another set of glasses in front of those, as one would normally wear them, the color get slightly more greyish brown.

If I wear one set of glasses and place another set of glasses, with the glasses facing toward me, that is backwards with the opposite lens in front of each eye, the light coming through is dark purple. In order to see the dark purple, I have to have the opposite eye lens facing me, and backwards. Simply turning the glasses over does not reveal the purple. They have to be opposite and backwards to see the dark purple/

Example, to see the dark purple, I wear one set of glasses normally, close my left eye, look only with my right eye, and place the left eye lense facing backwards in front of the usual right eye lense. Then I see dark purple.

If I put the right eye lense in front of the right eye lense, there is no dark purple no matter how I rotate or position the lens. However, with the left eye lens placed backwards in front of the right eye lens, the light gets dark as I rotate the lens.

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post #209 of 260 Old 03-01-2012, 03:18 AM
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I have had this purple ghosting issue too with the LG DM2350D TV/Monitor. I wrote this on another forum about the FPG-200F glasses that came with it

Quote:


I did some tests with the clip on glasses and if you rotate the lenses about 45 degrees anti-clockwise, the purple ghosting disappears and there is only a slight ghosting visible from time to time. As I don't use the clip on glasses normally I've loosened a screw on each lens so that I can adjust them. As this is far from ideal, I may even go further and try and fit them inside a pair of used RealD glasses or even a pair of anaglyph glasses of which I have dozens. It's a definite improvement when rotated though. Basically, every time the purple ghosting appears (especially when in the background) it takes you out of the 3D illusion instantly as you become consciously aware that the background is in fact "the screen", rather than giving the illusion that it is in the distance and behind the stereo window. This reduction of the purple ghosting means that you can watch the 3D as it is meant to be viewed. Interestingly, I have noticed that those 3D scenes which have been properly produced don't get any purple ghosting at all. Even some scenes that I have watched that have a huge disparity don't display any purple ghosting at all. Can anyone explain why this is? Why isn't the ghosting evident all the time?

I have been in contact with LG and after telling them the screen's serial number and forwarding a "proof of purchase" invoice I am hoping to receive a new pair of glasses. Now, the worrying thing is that after I gave him the serial number, the LG rep came back to me later and said the correct glasses are...and then gave me a long number. So does that imply that the original glasses in the box where incorrect then? More like they were just a bog-standard pair of passive 3D glasses rather than a pair that matched the LCD panel polarization. What a weird way to sell a 3D TV.

Now even though I am keeping my 3D TV as overall I really like it and enjoy the fact that I can now watch Blu-ray 3Ds, LG, as a company have proven to be pretty unreliable. Here are my experiences with them....

1) I first bought the LG D2342P but there was a problem when viewing Blu-ray 3D...the image was all juddery and unwatchable. Also, LG had neglected to include a monitor stand in the box. After several phone calls and lots of hassle between LG and Play as to who's responsibility it was to replace the screen, I finally sent it back to Play. That happened only after I threatened legal action with the Play customer service....boy have they gone downhill since the takeover. Meanwhile, during all of that, LG sent out the missing part when I didn't need it any more. That was the first bad experience.
2) I decided to buy the LG DM2350D instead from Amazon and I just want to say that they are a superb merchant...no hassles whatsoever and a clear statement of their return's policy. For a few weeks though I noticed these brightness fluctuations while watching Blu-ray 3D. At first I ignored it thinking it was the disc or player but after a while it became unwatchable. It really was distracting and there was no mention of how to adjust the settings to clear it up etc. I spoke to the LG rep and he had "no knowledge" of this issue. In the end I solved it by changing the settings to either "Expert1" or "Expert2" which have some ISF logo next to them. Now that might seem like ignorance on my part but why isn't this "brightness fluctuation" or "dynamic iris" mentioned in the manual at all? It is a very noticeable phenomenon and I couldn't imagine anyone wanting to watch anything in that way, with every scene brightening and then darkening. It's really distracting.
3) Finally, currently in the process of sorting out the 3D glasses issue as mentioned above.

Once I get these new glasses my 3D TV should be doing what I hoped it would do on day one when I spent my hard earned dosh on it. I'm happy now but boy has it been a long road for this 3D fan to get 3D in the home.

Now we just need the 3D content to improve. Roll on Hugo Blu-ray 3D(02 April UK release) and House of Wax at the end of the year hopefully.

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post #210 of 260 Old 03-03-2012, 06:16 AM
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Well I am not having any luck at all. The merchant does not want to take the TV back even though its recently purchased. LG insists that they sent the right glasses and want me to send the monitor in for repair. I normally buy from Amazon which have been great on returns and customer service but this merchant had a great price for the monitor. So I guess I can either send the monitor in or another option is to file a dispute with my credit card (which I really hate doing).
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