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raygun on 27 July 2010
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disolitude said:
raygun said:
disolitude said:
raygun said:

Why would they stretch a 1920x540 image to 1280x 720??? Wouldn't they just double the vertical to 1920 x 1080? It would be easier, and what would be the point of generating a 1920 hrz rez frame knowing it's going to be reduced to 1280? This format would never be used, there is already a 720 3d format! 

To me what they are doing is sort of interlacing, one frame holds 2 1080x540 frames, they are stretched to 1920x1080, In effect your getting 1920x1080 left and right frames updated every 1/60 sec. The frames are subsampled to 540 vertical, and then stretched to 1080, but at 60hz rate per stereo frame, it's an averaging  interlacing, or at least that's what i'd call it.

lol. You are much more accurate with resolution definitions than me.

I believe 1080i per eye resolution is what you have in mind and its absolutely correct.

I tend to keep it simple and deal with 480p, 720p, and 1080p when I talk. 1080i is roughly the same amount of pixels as 720p and visual quality of both to the human eye is about the same... hence I don't distinguish the two.

But you are right...1080i not 720p. My bad.

Actually....1080i doesn't equal 720p, pixel wise. Maybe close if your just looking at one interlaced frame, but with 2 frames, 1080i is 1920x1080 pixels. Each interlace frame is 1920x540, but they are different interlaced slices of the total 1920x1080 frame. 720p is just 1280x720 pixels.

But, I don't think we can say that the "1920x1080p @ 59.94/60Hz (Top-and-Bottom) mode is interlaced, wouldn't they call it such? They are averaging every 2 vertical lines in a1920x1080 frame (subsampling) to end up with frames that are 1920x540. How can they call this a 1080p mode, I wonder? May be it's cross eye interlacing, the left eye gets the even lines, the right eye the odd lines? Seems I remember this being done in the past. 

Anyway, I would be totally content with a 1080p game running at 30hz, or better yet at 1080i at 60hz. 30 hz is what most console games run at anyway, and have trouble even getting that. Sure there's a few 60hz exceptions, StardustHD, WipeoutHD. But WipeoutHD, the sneaky bastards, uses 'variable horizontal resoulution', 1280 to 1920, and it still tears every now and then. 

Getting back to the OP, I personally am ready for a new TV, I like 3d, and will be buying one. It's either a panasonic vt20 or the new Vizio 480hz lcd's, depending on the reviews. A 60" laser or dlp is just too big for my apt., and I just saw the 3d adapter for samsung 3d dlp's listed at $300, without glasses. And i'm one of those people that notice the dlp rainbows.


Wipeout HD is the only PS3 game I saw in 3D thus far. I am pretty sure it is no longer running anywhere close to 1080p or 60 hz when in 3D. I actually couldn't believe the visual drop for that game... 

Everyone has praised Stardust HD so I am curious to see that.

Otherwise I am sure you will find a TV that best suits your needs. If you need one, you need one... I was just suggesting DLPs because they support everything right now. That samsung adapter is only 300 because it is a 3rd party workaround since samsung isn't releasing one. Mitsubishi adapter is 99 bucks... But being too big is definetly a valid argument.

I don't know anything about this 480 hz Vizo but I did look at the VT20 and despite their claims of having "faster phosprus" to prevent ghosting in 3D, I saw slight cross talk between the eyes when looking at a 3D soccer match they had showing on the TV.  This is not something I'd like to see when Im asked to spend 2500 bucks...

As far as the rainbow effect on DLPs, pretty much all DLPs that are still on the market have a color wheel which spins at 7200 RPMs (120 hz) and a 6 color processor. Old ones were 60hz and 3 colors...If you can still see the rainbow effect with all this implemented...damn dude, you have superhuman vision. :) 

Thinking that I need another 3D TV for me was overkill at this point. I have a 6 month old 50 inch Samsung plasma in the bedroom and 2 year old 67 inch 3D DLP in the living room. I was looking to upgrade the bedroom one to a 3D model as well, but I don't see anything out yet that will give me better 3D performance of my DLP for 2000 or less which is what I was looking to spend.

StardustHD was the only game I heard that they got running in 3d at1080 60hz, but recently they nocked it down to 720.


Hah, no i'm not superhuman, but if I notice it even a little, it bugs me, and I find myself looking for it. A 120rps color wheel w/6 colors means the color changes 720 times a second, not fast enough I say! I notice the rainbows when there is vertical movement on screen. I would love to fiqure out the math envolved with that, ie if a screen object is moving vertically, at what rate are you going to see some color artifacts, because the wheel isn't spinning fast enough?  Let's see, 120hz, 6 colors, that's 720 colors/sec, which means 12 color changes per one 60hz frame. What would it take for one of the colors to 'miss', say with a black screen with a falling white box? Are there certain falling rates that resonate with the color wheel's speed? Yes, there are, but my brain is to tired to fiqure it out, but I know it happens, I can see it. Do you realise at any givin instant there is only ONE color on screen? Think what that must be doing to your poor brain! Also, bulbs burn out. The ultimate tv will be OLEDs, but they are a few years off, and I don't want to keep waiting for the next best thing. I don't need the best, but the best for my money.