I said I'd report back about the service call I had from LG this morning. Here are my impressions:
I was pleased with the tech they sent out. He listened and didn't try to gloss over the 3D ghosting problem I'm having with my E6. After I showed him the jpg file that I've attached here, as well as my 3D ghosting torture test disc and a freeze frame from "Mr. Peabody and Sherman," he could see the issue well.
Here's the course of action he suggested:
1. Return the set to Best Buy and get a replacement.
2. If the new set has the same issue, call him immediately (he left his cell number on the back of his card).
3. A more knowledgeable LG engineer will evaluate the second problem and verify it.
4. LG will work with me to resolve the issue to my satisfaction.
I'm going to communicate this conversation with the Best Buy rep at a nearby store. I've worked with him in the past, and I think I can talk to him.
Here's the link to the UHD-resolution jpg test picture.
Right click this link and choose, "Save link as..." (This works in Chrome, but it may be slightly different in another browser.) Copy the file into the root of a flash drive and plug the drive into a USB port on the E6. Select the icon (photos and movies) that comes up automatically when you insert such a drive. Select the half white/half black photo. Hit the 3D button on the remote and select the side by side 3D icon (second from the left). Put on the glasses and close your right eye. From the TV's sweet spot (eyes perpendicular to the screen, dead center vertically) you should see a uniform gray screen. If it's splotchy, the light areas show where the screen will ghost. If as is the case with my E6, there's significant ghosting at the top and bottom of the screen at the same time, you'll never see high quality 3D over the whole screen at once. Your FPR is defective.
Here's my 3D ghosting torture test disc.
It's an iso file that can be used to create a standard Blu-ray 3D disc. Burn the Blu-ray disc and put it into a 3D player connected to the E6. It'll start playing 3D automatically. Follow the instructions, and you'll be able to identify 3D ghosting issues with your set.
You can also demonstrate ghosting problems with commercial 3D discs, but it's a lot harder. One thing his supervisor did was to ask the LG tech to try to eliminate ghosting by going to the 3D settings in the TV's menu. The tech may be able to get rid of ghosting in one scene of a movie (or some of these tests), but the controls simply move the ghosting to a different part of the screen. If the ghosting moves to the middle of the screen, where the 3D may be OK, the controls will appear to work. So, the controls may mask ghosting for a particular scene of a particular movie, but the new settings don't fix a bad FPR. Even if this type of adjustment did work for one scene in one movie, it's not realistic to ask people to adjust things constantly as they watch 3D. If a set's FPR is working properly, and you're viewing from the sweet spot, you'll never have to adjust these controls. For the same reasons, if you adjust these controls with an FPR that IS working properly, the set still won't ghost significantly. It may become uncomfortable (or impossible) to watch the 3D, but it won't ghost any more than it always does. (And these sets do ghost. It's just that the ghosting is so light as to be nearly invisible.)
You need to understand how passive 3D works to be able to communicate with a repair tech, but the basics are really simple. If you view from the screen's sweet spot, 3D should always look good on these test patterns. It it's splotchy and uneven, the FPR is bad and your panel will never reproduce consistently good looking 3D video.
Edit: Sorry, the jpg link didn't work initially. It should be OK now. I've verified it's in my Dropbox Public folder.