REVIEW OF THE LG FLATRON D2342 CINEMA 3D COMPUTER MONITOR

Table of Contents

In a Nutshell

The LG D2342 is a competent 3D computer monitor that uses passive glasses technology to display stereographic images. With appropriately processed JPEG files, it is possible to display 3D still images on this monitor using a non-Windows computer (Mac, Linux, etc.) because specialized hardware driver software is not required. This monitor is also the perfect companion for use with the free StereoPhoto Maker application for editing and displaying 3D photographs that are encoded in virtually any common digital 3D photo format. It also gives the Fujifilm W1 & W3 camera owner a quick, convenient, and fun way to review and show off 3D photos and videos straight from the camera. Unfortunately 3D image quality is hobbled by being supplied with what are, at best, mediocre quality glasses. However even with the included glasses, this 3D monitor is usable and useful, and with better glasses, the potential image quality could be quite good.

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Introduction

The LG FLATRON D2342 CINEMA 3D MONITOR is a stereographic 23-inch class computer monitor with LED back-lighting. To enable the 3D effect, it uses passive (polarized) glasses rather than active (shutter) glasses. The pros and cons of these two different 3D viewing technologies has been fully explored by others although most often within the context of 3D TV sets rather than computer displays. This is because, initially at least, active 3D computer monitors and laptops have been more widely available than passive models. However what is rarely mentioned is that no special graphics card or hardware drivers are needed to view stereographic images on this passive 3D computer monitor. More on this later.

I purchased this monitor specifically for the editing and display of stereographic photographs (captured with my Fujifilm W1 and W3 3D cameras) using my oldish 17 inch Apple MacBook Pro laptop. Because of this, my review will focus primarily on aspects of this monitor's performance within that context. Other common and popular uses for 3D computer monitors includes 3D gaming and watching 3D movies. Since I have no practical experience using this monitor with either, I'll apologize now for not discussing this monitor's specific strengths and weaknesses for such use. And finally, since I did not install the supplied TriDef software and drivers this review will be mute on that subject as well.

So What'cha Got in the Box?

For documentation and software, this monitor comes with a 20 page owner's manual in PDF format on a CD, and a quick setup guide. A second CD containing TriDef 3D software and drivers for Microsoft Windows, and its companion quick installation guide, is provided as well. Unfortunately the manual does not go into much technical depth about the monitor's underlying technology or features.

Also in the box are an analog D-SUB monitor cable, digital DVI-D monitor cable, power cord and, most importantly, the 3D glasses you'll need for seeing your stereographic images. Many retail sites selling this monitor say that it comes with only one pair of glasses. In point of fact a pair of conventional style glasses are supplied as well as a pair of clip-ons. The glasses come in a kit with the accessory number FPG-2000 which includes a soft drawstring bag for each pair of glasses and a microfiber cleaning cloth. (That accessory number is an important bit of information as we'll see later.) Not included is a 1.4 compliant HDMI cable which would be needed to connect the monitor to a 3D camera or 3D Blu-ray player.

Besides the analog D-SUB (not tested here), DVI-D, and HDMI ports, the monitor also has a standard mini-stereo headphone jack. While the monitor itself does not have built-in speakers, it will output any audio received via the HDMI connection to this analog audio port. Virtually any set of self-powered external computer speakers, or a home entertainment system, could be attached to add sound capability to the monitor itself. (This feature is particularly important for Fujifilm W3 camera owners displaying video, since the camera's own speakers are muted when the mini-HDMI connector is attached to the camera.)

The monitor panel itself has a matte finish surrounded by a shiny black narrow frame that is a fingerprint magnet. The model number and brand name on the frame are a very tastefully subdued gray. The monitor setup buttons have no labels at all. Pressing any button brings up an on-screen menu positioned over the buttons. A nice touch.

When turned on, the round power button in the lower right is a brightly backlit blue. It looks 'cool' but is a bit distracting. The button annoyingly blinks when the monitor is in standby mode. (Both problems can be easily solved with a small bit of black tape!)

Some 3D Theory and Mechanics

In this section we examine how the LG D2342 accomplishes its 3D magic. If you only care about how well the LG performs at displaying images, you may want to skip to the next section.

A Digression… Taking two or more channels of information, combining them into a single signal that is then later decoded by the receiver back into discrete channels, is called "multiplexing". FM stereo radio is a common example of everyday use of this technique. Any stereographic display technique that combines the left and right images of a 3D pair into a single image is using multiplexing. 3D movies, 3D TVs (both active and passive), and auto-stereoscopic displays, found on some handheld devices (Fuji W3, Nintendo 3DS, 3D phones) all use the idea of multiplexing. Multiplexing introduces its own set of problems such as crosstalk between channels (in stereography this is seen as ghosting) and signal degradation. It is difficult to create a multiplexed system that works as well as discrete channels transmitted over the same medium.


  A stereographic photograph requires a pair of left and right images that need to be transmitted somehow to the viewer's left and right eyes. Ideally the left eye should see none of the right image, and vice versa.

  With active shutter glasses, the left and right images are rapidly alternated on the monitor display. The shutter glasses, which contain electronics, receives a timing signal from the display and in synchronization with the display turns the left glasses lens opaque when the right image is displayed, then turns the right glasses lens opaque when the left image is displayed. While each eye sees the entire corresponding image, for a very brief moment, the alternate eye sees nothing at all. For some people this can be perceived as a subtle flicker.

  The LG D2342 takes a different approach. The image sent to the monitor's display is arranged in such a way that the every other horizontal scan line of the left image, is combined with alternate scan lines of the right image. Thus in the vertical dimension, half of the left image is combined with a corresponding half of the right to provide a full screen image. In the case of the LG D2342, this is a total of 1080 scan lines (540 from the left, and 540 from the right). The technical term for this approach is called "interlaced".


  Covering the LG's LCD display panel is a special polarization filter which has narrow horizontal regions that precisely correspond to the row of pixels in each scan line of the display. The orientation of the polarization alternates with each line in such a way that, when the correct 3D polarized glasses are used, the left eye sees the left scan lines, and the right... Well by now you get the idea.

An important consequence of the interlaced method used in the LG monitor is that each eye is seeing only half of the vertical resolution of the display. For a 3D photographer interested in image quality, learning this will probably ring alarm bells. While this does have an impact on image quality, the effect may not be as bad as you might think. Read on.

With the LG, how and when the interlacing of the left and right images happens depends upon the input selected. Using the HDMI input, the LG can understand 3D images transmitted in 3 different formats; side by side, top & bottom, and line interlaced. The LG converts the input, as necessary, to the required interlaced pattern. In contrast, when the computer inputs (analog or digital) are used, it is the computer's responsibility to perform the interlacing of the L/R images. Thus with HDMI input, the entire screen is used to display the 3D image. But under computer control, it is possible that only a portion of the screen, say an image window, is displayed in 3D while the remainder of the display remains in 2D.

There is another consequence of the LG acting as a 'dumb' display when under computer control. Since the interlacing of the left and right images is not a technically difficult problem, it can be performed by the application. The operating system does not need to know about the special nature of the display, i.e. requiring special hardware device drivers. Only the application needs to be 'told' to use interlacing to render the 3D image. (Actually, if the image is correctly preprocessed, even the application doesn't need to know the image is 3D, so long as the image is precisely aligned on the display. More about this later.)

How's the View in the Flatlands?

I purchased this monitor exclusively for the 3D feature, having no other compelling need for an external monitor on my MacBook. But for a lot of folks, this could well become their primary monitor for their desktop system, so basic 2D performance is important too. On that front, the D2342 appears to be a perfectly fine and adequate display. In 2D "mode" (i.e. not wearing the 3D glasses) the images on this monitor look no different than any other 23-inch full HD (1920 x 1080) widescreen display. Even with very close inspection, applications and 2D images displayed no visible artifacts caused by the special polarizing sheet applied to the surface of the LCD panel. In a side-by-side comparison of the LG to my MacBook's own display, the LG is every bit as bright with good contrast and colors. The older MacBook display has slightly better black levels than the LG, but in viewing a series of identical 2D images on both screens, the D2342 held its own with even a few images looking better on the LG than the Apple.

This is not to say that the LG D2342 is the ultimate monitor for viewing photographic images. My 27 inch Apple Cinema display blows the socks off the LG, but that is hardly a fair comparison given the high cost and pixel density of the Apple. Let's just say the 2D image quality of the LG is comparable to other conventional monitors in roughly the same price range.

Using a variety of LCD monitor test images, I found only one stuck pixel which in normal use I have yet to see. The LG provides built-in "warm", "medium" and "cool" temperature presets. The LG's "warm" looks closest to my MacBook's native 6507K setting and looks good to my eyes. The "medium" is a bit too cool and the "cool" is positively lavender! For the fussy, it is possible to set a custom color profile using RGB sliders. There is an adjustable brightness level but no contrast control. There is also a "3D COLOR EFFECT" which according to the manual is suppose to optimize the picture quality in 3D mode. I found that it made the screen brighter to the point of pretty consistently blowing out the image's highlights. The setting is probably an attempt to compensate for some darkening caused by the glasses, but I have yet to find it helpful in practice.

Image quality is significantly degraded when looking at 2D content when wearing the supplied 3D glasses. There is an easy fix for this – take off the damn glasses! I mention this only because I've seen complaints about this in other reviews. It should be common sense that if you are not specifically viewing 3D content, it is silly to be wearing the 3D glasses. The 3D glasses will not make your Excel spreadsheet look any better. Trust me.

Instant Gratification – It's a Good Thing

The following may be of interest primarily to owners of the FUJIFILM FINEPIX REAL 3D W3 digital camera. On the other hand, this information may inspire some to consider acquiring their own sample of this remarkable camera.

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The Fujifilm W3 comes equipped with a HDMI Mini port that supports the HDMI 1.4 standard required for transmitting 3D signals. This allows the camera to be used as a playback device when connected to most 3D TVs. The very first thing I did, after setting up the LG monitor, was to plug in my W3.

It worked like a champ!

A particular delight is one of the camera's built-in slide show features called "3D FADE". In that mode, all the current images in the camera are displayed as an automatic slide show. First the image is displayed in 2D, then there is a dissolve to the same image in 3D. Magical. If you want to impress your friends and family with your 3D photos, this is the way to do it. Only an automatic 3D "Ken Burns effect" would be more impressive. When manually advancing through your pictures, the camera also makes it easy to quickly toggle back and forth between 2D and 3D versions of any stored image. This is a great way to evaluate how much the 3D effect enhances the image (or not). While the camera allows the user to adjust the stereo window while playing back images on the camera's own display, this feature is unfortunately disabled when playing back through the HDMI port. Pity. The camera also does not send live images to the HDMI port, only stored images.

There are two 3D monitor menu settings that are operable when using the monitor with the Fuji – switching the L/R images and turning off the 3D effect. For the W3 there is no need to swap the L/R setting, and using the camera's own 3D/2D button is much faster and considerably more convenient.

Regrettably I don't currently own any other HDMI devices (3D or not), such as a Blu-ray disc player, to test with the LG.

The Good, the Bad, and the Ugly

You've probably noticed by now that I really haven't said very much yet about the LG's 3D actual image quality. Well there's good news, and there's bad news, and there's some just plain annoying news.

As far as the monitor itself goes, the 3D image quality is quite good. I was concerned about the effective vertical resolution being halved for each eye, but in practice I don't find it objectionable. While to my eyes there is a subjective 'harshness' in the 3D images compared to the 2D version, any quibbles I may have with this are vastly overwhelmed by the pleasure of finally seeing my 3D digital images at a size much larger than a very small postcard (my camera's own 3D display). This isn't to say that the underlying technology is without its own problems.

Let's look in detail at some of the issues involved and their impact on image quality.

What's Your Angle?

A characteristic shared by some 3D display technologies is the phenomenon of having a viewing 'sweet spot'. This is particularly true for auto-stereoscopic (glasses-free) technology and also happens to be true for the LG D2342 as well. The LG's horizontal viewing angle for 3D is reasonably wide. The vertical angle, not so much. In terms of horizontal coverage, two people sitting side by side should not have trouble viewing the LG, but there could be problems if there's a significant difference in their heights.

The following video attempts to illustrate the LG's sweet spot effect.

When setting up the monitor, it is worth taking a few moments to carefully adjust it for the optimum viewing angle. Do not assume that facing the monitor panel squarely will automatically yield the best results. To adjust the monitor angle, try viewing a 3D image with strong contrast and depth. Or find the 'sweet spot' by using a simple polarization extinction test image like the one shown in the video. For your convenience, take your pick of two different tests, linked here for download, and available as either an interlaced JPEG file format, or 3D MPO file.


TEST01 (single file): This test uses a single image to test both the left and right extinction rates.

No Glasses
This is what you should see on the LG D2342 (or conventional monitor) without using the 3D glasses.
Left Eye w/ Glasses
In a perfect world, this is what you would see when viewing the image with the glasses using just your left eye. In practice you will probably still be able to make out the diamond shape and word "right" through the fog.

TEST02 (L/R files): This test uses separate files for left and right trials. While a little less convenient to use, these images test the extinction across the entire screen rather than in just two quadrants.

No Glasses
Using the left version of this test, this is what you should see on the LG D2342 (or a conventional monitor) without using the 3D glasses.
Left Eye w/ Glasses
In a perfect world, this is what you would see when viewing the image with the glasses using just your left eye. In practice you will probably still be able to make out the word "right" through the fog.

Here are the download links for both formats of both tests.


Right Click on a Link to Download the Test Image
MPO Format
TEST01
TEST02 (left)
TEST02 (right)
  This format of the extinction test images can be viewed on any 3D monitor supported by StereoPhoto Maker (SPM). This includes the LG D2342 using SPM's interlace mode. While SPM can display the test image successfully at any size, it is best used in full screen mode.
  
JPEG Format
TEST01
TEST02 (left)
TEST02 (right)
  This format of the test images can be opened with any standard image viewer, but to work it must be viewed on the LG D2342 in full screen with no scaling. One way to do this would be to temporarily set it as the desktop wall paper.

Your goal in using either test is to find the position that provides the best extinction (uniformly black areas) for both eyes. However when wearing the glasses, don't try to use both eyes at once, it will be hard to look at because of retinal rivalry. Instead alternately cover one eye, and then the other.

Do I Look Good in Stripes?

One particular concern that some people may have with passive 3D LCD technology is the issue of having visible horizontal black lines in the image. This happens because each eye sees not only the corresponding scan line it is suppose to see, but also the alternate eye's image which is suppose to be rendered by the 3D glasses as a very dark gray line. This striation effect is easily seen when sitting close to the monitor, while looking at areas with uniform highlighting such as clear sky or a light colored painted surface. However for me, sitting back about 3 feet (1 meter) from the monitor effectively eliminates this effect. Even so, from time to time an image containing closely spaced lines, such as the siding on a house, will cause visible pattern interference. And the subtle harshness remains. To my eye it looks like an artificial sharpening effect has been applied to the image. I blame this on the fine black lines which, while not discernible at a distance, still have an impact on the overall perceived 'smoothness' of the image. Overall the LG's 3D image quality is good, but if you're expecting Kodachrome, you're going to be disappointed.

This striation effect becomes an unexpected issue, however, when viewing mixed 2D/3D content – and changing your viewing distance does not solve the problem. When working on your 3D photos in StereoPhoto Maker (SPM), images can be viewed in 3D by using the application's interlaced display mode. In this mode, the photo within the SPM image window is correctly rendered for the LG display, while the rest of the application (menu text and controls) remain in 2D. The problem with this is that, with the glasses on, the small 2D text in the menus can be hard to read because of the horizontal striation caused by the glasses. (See the screen shots below to observe this effect.)

Now you might think that simply adding the left half of the 2D image with the right half of the 2D image would result in a perfectly fine 2D image in your head. But the striations are clearly visible in the 2D content, making small text unreadable. My theory is that this caused by our old stereographic nemesis retinal rivalry. Sitting very close to the monitor while wearing the glasses, I examined the application's small menu text. Using only one eye at a time, it was easy to clearly see the fragments of the lettering, separated by the dark gray lines. But with both eyes open, the lettering refused to fuse. Instead I saw the alternate flickering of retinal rivalry that so familiar to experienced stereo photographers.

A Digression… One solution to this particular problem would be implementing a two-monitor feature in SPM. The image controls and menus of SPM would be displayed on the conventional 2D display, while the image being viewed and adjusted, would be displayed in the second, 3D monitor. Separating the controls from the working image, using two or more monitors, is a strategy that is sometimes used in professional engineering CAD/CAM applications. It would be a nice wish list item for a future SPM enhancement, but realistically it probably isn't a common enough need to justify the work that would be involved.

A more practical second solution is well within reach of a typical hobbyist. Simply modify a pair of 3D glasses to work like bifocals. By removing either the top or bottom half of each lens, the operator simply looks over (or under) the lens to observe the 2D content clearly. (This is similar to the modified glasses that some 3D projectionists use for quickly assessing the alignment of 3D images in order to make fine alignments.)

How much impact all these issues have on the final image quality is unfortunately very subjective. As with so many things, personal preference plays a big role. What can be a deal breaker for one person will hardly be noticed by another. With respect to the issues discussed so far, if I could own only one 3D display for showing my photographs, then this monitor would not be it. But while there are some real image quality issues with this monitor, for me they are easy to overlook given the sheer utility of this monitor for evaluating and editing 3D images. For me this monitor is a trusty pickup truck, not a luxury sedan and that's how I plan to use it.

For a Few Dollars More…

So we've covered the good and the bad. Now let's talk about the ugly.

Both of the conventional and clip-in 3D glasses that came with my LG D2342 are, how should I say this… crap! At first I thought it was me. The first time I used the monitor/glasses, I found myself rubbing my eyes because I would see isolated blurriness, as if something was in my eye. I quickly realized it was not my eyes, but the glasses. My first instinct was to assume the glasses were smudged, but no amount of cleaning solved the problem. Casually holding the glasses up to the light, they looked fine, but when carefully looking at any detailed image, while moving the glasses, there were definitely optical anomalies observed in the lenses.

Upon discovering this I immediately tried the clip-on glasses, but found they too were similarly flawed. I've created the following video in an attempt to demonstrate the problem. The supplied monitor glasses are the first pair demonstrated in the video, then for contrast a pair of LG glasses designed for the LG passive 3D TV line.

OK, let's ignore the crappy glasses for the moment. One of the selling points of passive 3D is that additional glasses are… Well here, let LG explain:

It's easy to jump right in with one pair of lightweight 3D glasses and one set of clip-on glasses already included**. Plus, they're easy to replace, lightweight and give you a high quality 3D picture.
** Additional 3D glasses are sold separately.

Sounds good! Sign me up! Just one problem. There was no information included with the monitor, that I could find, about how to buy more glasses. Searching for the glasses model number (FPG-2000) that was printed on the glasses kit box, I was unable find any major retailers listing these glasses for sale. I contacted LG Customer Services for help and their recommendation to me (and others) was to purchase the LG AG-F200 which are the glasses sold for the LG Cinema 3D TVs which also use passive technology. These glasses are readily available at a reasonable cost and as it turns out, are optically superior to the monitor glasses (i.e. no distortion).

Too bad they are not fully compatible with the monitor.

The [history of 3D polarized glasses is a very long one. This is not new technology folks. To work, the type of polarization used (linear or circular) and the orientation of the polarization (horizontal, vertical, 45°, etc.) of the glasses must match the standard used by the image source. As you might guess, there have been many different standards over the years, and it turns out, the standard that LG uses for their 3D LCD TVs just happens to be different than the one they use for their 3D LCD monitors.

Here are two images that illustrate the problem. This first picture shows both the AG-F200 (TV) glasses on top, and the FPG-2000 (monitor) glasses on the bottom.

./glasses-test-01.jpg

The photo simulates what the right eye should see when looking at the left side of a 3D image. Ideally the right eye should see none of the left side image at all. Notice how the extinction of the monitor glasses is almost completely black, while significant light is transmitted by the TV glasses.

Next we rotate both glasses (changing the orientation of the polarizer) until we reach an angle where the TV glasses achieve maximum extinction.

./glasses-test-02.jpg

From this demonstration we can see that the type of polarizer, in this case circular, is the same for both the monitor and TV glasses. But the linear orientation is different.

In practice using the LG 3D TV glasses with the LG 3D monitor works… sort of. Many images with high contrast suffer from mild to severe purple ghosting. See the circled area of each image below for an example. Click on an image to see more detail.

No Glasses
The interlacing is clearly visible without the glasses. Also note the clarity of the menu text.
LG TV Glasses
Purple ghosting is visible because of incomplete extinction. This is caused by a polarizer orientation mismatch.
LG Monitor Glasses
No ghosting here.

There is, however, at least one compatible replacement to LG's own monitor glasses that I am aware of. Zalman also makes passive 3D computer monitors and in my tests their ZM-SG100G glasses are fully compatible with this LG monitor. The Zalman glasses are shown on top. They have a glossy black frame in contrast to the LG's matte black.

In the Zalmans I saw a little bit of the same optical distortions seen in the LG monitor glasses, but to a far lesser extent so they are certainly usable. Both the LG and Zalman glasses are labeled as being made in Korea. The type of construction is similar although they are not exactly the same style frames. While neither has what I would consider substantial frames, the Zalmans are pretty flimsy but certainly serviceable. They do come packed in a very nice hard case, with a soft interior surface to protect the lenses. A generous sized microfiber cleaning cloth is also included. I paid about $17 including shipping.

So at the time this was written, there are no OEM LG monitor glasses available for sale from any major retailer. What are the current options for owners of the D2342?

  • Use the glasses that came with the monitor – just don't lose them! – and put up with the poor optical quality.
  • Buy and use the LG's TV version of the glasses, which are optically distortion-free but suffer from increased ghosting.
  • It turns out that the "RealD" 3D movie glasses uses the same polarizer standard as the LG TV glasses. I have aquired a few pairs of these glasses and optically they are quite good. These could be used as is with the same results as LG's TV glasses. Or better still, with a little work it should be feasible to use a pair of movie glasses as lens donors to construct homebrew cardboard glasses. Getting the lens orientation correct would be just a matter of simple experimentation.
  • Acquire a pair of Zalman ZM-SG100G glasses, as described above.

It's hard to understand if the optical problems with the supplied LG monitor glasses is because of a manufacturing error, or due to penny pinching to meet a desired price point for the monitor package. But what possible excuse is there for not making it easy to buy additional pairs of glasses?

Conclusion

Despite the poor quality of the supplied glasses, by itself the LG Flatron D2342 Cinema 3D monitor is worth the money for what it can do and for its competent, if not stellar, 3D image quality. Is the 3D viewing experience of this monitor as good as the best of the current crop of high definition 3D TVs? No. But then this monitor costs a fraction of even the cheapest 3D TV currently available. What this monitor does do is show me all the detail I need to see, both in terms of image quality and 3D depth, to more effectively edit and tweak my stereoscopic photos. And the image quality is certainly good enough for occasionally sharing a few favorite images with friends and family without having to make apologies. So this monitor is now the center of my 3D photo editing workflow, and in a pinch it can be used as a 3D picture frame for showing a short slide show or 3D video to one or two people.


Appendix


Notes for the Macintosh User

My favorite 3D photo editing software by far is Masuji Suto's powerful StereoPhoto Maker (SPM). Unfortunately for me, a happy Apple Macintosh user, SPM only runs under Microsoft's family of Windows operating systems. It is possible, however, with a little bit of software magic to run many Windows-only programs, like SPM, on Macs powered with an Intel CPU.

The solution I picked is running VMware Fusion with a virtualized clone of my long departed Dell laptop's XP operating system. While the performance of SPM is not bad with this configuration, having to boot up XP every time I might want to look at a few 3D pictures on my LG 3D monitor is not very convenient. While not a perfect solution, 3D images saved in precisely sized interlaced format can be viewed as a slide show on the D2342 using Preview (Mac OS X's default image/PDF viewer). The key is that the interlaced images must be saved in a precisely proscribed format, as discussed below.

A possible alternative for Mac users that does not require Windows emulation is Stereomerger. I tried version 1.146 and was able to display 3D interlaced images on the LG. However I did have trouble getting some features of the program to work. Since I am happy with SPM, I have to admit that I didn't try very hard to determine the problem. Your mileage may vary and I would certainly encourage you to contact the program's author if you run into problems.


Creating Interlaced JPEG Photos Using SPM

Right now, the only way I know how to create an interlaced 3D JPEG image is using StereoPhoto Maker (SPM). Unfortunately, for some of us at least, SPM only runs on Microsoft Windows. So this information is useful only if, by hook or by crook, you can process your 3D photo files using SPM on some Windows machine, real or virtual. But once the images are saved in the appropriate interlaced format, you should be able to display them using any computer you can connect to the LG D2342, using software that should already be installed on your machine. The key is that the image must be sized so it is exactly 1080 pixels tall.

Here's a step-by-step guide for saving such images using version 4.30 of SPM. As with any feature rich program, there's always more than one way to do a task. If you have a better or more concise process to accomplish the end goal, please drop us a line.

  1. Open a stereo image using either of:

    File->Open Stereo Image...
    File->Open Left/Right Images...

  2. Adjust the stereo window and perhaps normalize the color between the two images.

    Adjust->Auto alignment
    Adjust->Auto Color Adjustment

  3. Crop the image if desired. This step is option. Select the Free Cropping Option...

    and set the Aspect-ratio to 1920x1080 which are the dimensions of the LG D2342. This is also the dimensions of a full HD TV as well.
    However we are not setting the image size by doing this, just the aspect ratio. Now by selecting or clearing the keep Aspect-ratio checkbox, you can constrain your crop, or not, to the proportions of the monitor. If you wish to have your image fill the entire width of the monitor, turn this option on.

    Crop by moving to the upper left corner of your desired area and clicking to establish the corner and drag to the desired lower right corner. Click within the image to complete the crop.

    Then redo:
    Adjust->Auto alignment
    to reset your stereo window.

  4. Resize the image by clicking on the resize button.

    In the dialog box that appears, make sure the Keep Aspect-ratio button is selected.
    In the Y field enter 1080 The X value will automatically change as required.

  5. If you are not already viewing the image in Interlaced mode, turn it on now by pressing the Interlace button.

  6. Now you can do File->Save Stereo Image... to save an interlaced version of your image.

  7. Lather, rinse, repeat...

That's all folks!


Correspondence Log with LG Customer Service

I corresponded with LG Customer Service using their on-line contact form when reporting issues with the 3D glasses for the LG D2342 monitor. Here's a brief rundown of the exchanges to date.

Where to Get Original Replacement Glasses?

After ordering my monitor, I read on the Yahoo Fuji3D interest group that the replacement 3D glasses recommended by LG did not work properly with this monitor. I wrote to LG Customer Support using their contact form.

The type of inquiry : Parts or Accessories

Product/Model No. : Monitor/D2342P-PN

I have the D2342 3D monitor on order from a local retailer. I understand that the monitor only comes with one pair of glasses and wish to buy some more. However the proper glasses for this monitor -- FPG-2000 – are nowhere to be had that I can find. It is important to have exactly the right type of glasses for 3D displays of any type. The glasses used for the LG 3D TVs are not fully compatible with this monitor and will cause ghosting artifacts.

And the reply…

Date: Thu, 22 Sep 2011 09:17:14 -0400
From: LG_care_center@lge.com
To: Bill.Costa@alumni.unh.edu
Subject: LG Customer Email [This email address is used for outgoing mail only]

Dear Bill,

Thank you for taking the time to contact us. I am delighted to hear
from you as our valued customer. I will be more than happy to assist
you with your inquiry.

You can use the glasses model number LG AG-F200. You can take a look
of them at amazon.com.

I hope this information is helpful, please do not hesitate to contact
us back if you have any other inquiry. I will gladly assist you.
Many thanks for being an LG customer. Please enjoy the rest of the
day and I wish you the best!

Ernesto Q.
-----------------
LG Customer Service
Toll Free number: 1-800-243-0000

I wrote back that the LG AG-F200 glasses were not compatible with the LG monitor. Where can I purchase the FPG-2000 glasses?

Date: Fri, 23 Sep 2011 11:29:10 -0400
From: LG_care_center@lge.com
To: Bill.Costa@alumni.unh.edu
Subject: LG Customer Email [This email address is used for outgoing mail only]

Dear Bill,

Thank you for taking the time to contact us. I am delighted to hear
from you as our valued customer. I will be more than happy to assist
you with your inquiry.

You can contact our part distributor.

Encompas Parts
866-779-7906
(M-F 8:30 AM - 7:00PM EST)

I hope this information is helpful, please do not hesitate to contact
us back if you have any other inquiry. I will gladly assist you.
Many thanks for being an LG customer. Please enjoy the rest of the
day and I wish you the best!

Ernesto Q.
-----------------
LG Customer Service
Toll Free number: 1-800-243-0000

Well, that's more like it! But when I went to the Encompas Parts web site I was unable to find the monitor's original glasses available as a replacement part. Back to square one.

Warranty Service Request for the Monitor Glasses

When I finally received my own monitor, I discovered that the supplied 3D glasses had visible defects. Not wanting to return the monitor to the retailer since the monitor itself was working fine, I tried to initiate a warranty claim.

The type of inquiry : How to obtain Repair Service?

Product/Model No. : Monitor/D2342P-PN

The 3D glasses supplied with this monitor appear to be defective. The lenses have optical distortions which cause the image on the monitor to be blurry. I created a video that attempts to demonstrate the problem:

http://youtu.be/SEPESY6WLLk

Note this has nothing to do with the 3D nature of the monitor or glasses themselves. The lenses are optically distorted whereas the polarization of the lenses is correct and the 3D imaging effect works.

And the reply…

Date: Wed, 28 Sep 2011 10:18:08 -0400
From: LG_care_center@lge.com
To: Bill.Costa@alumni.unh.edu
Subject: LG Customer Email [This email address is used for outgoing mail only]

Dear William,

Thank you for taking the time to contact us. I am delighted to hear
from you as our valued customer. I will be more than happy to assist
you with your inquiry.

We are evaluating the video to determine if a defect in the lens.
send your video to our engineering department for evaluation.

I hope this information is helpful, please do not hesitate to contact
us back if you have any other inquiry. I will gladly assist you.
Many thanks for being an LG customer. Please enjoy the rest of the
day and I wish you the best!

Ernesto Q.
-----------------
LG Customer Service
Toll Free number: 1-800-243-0000
LGEAI | Customer Interactive Center

Stay tuned…


Copyright © 2011 Bill.Costa@alumni.unh.edu

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License

Date: 2011-10-17 22:49:21 EDT