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bbartine
Joined: 23 May 2008
Posts: 13
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| Posted: Tue Nov 23, 2010 9:50 pm Post subject: G90 mods?1080P capable? |
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I am all set to get a super high end G90.
Low hrs, start reading up on the set and find the G90 mods blog. Two years of
People waiting on mods so they can get 1080P out of their crt projector.
Others seem to be getting great and full 1080P. What is real?
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Tue Nov 23, 2010 10:25 pm Post subject: |
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A 1080P signal fed from a BR player, HTPC etc through a HD Furry or Moome card looks amazing without any mods to the pj itself. Limitations in the video chain prevent the 10+ year design from full resolving 1080P. The MP mods were going to remedy this situation but it appears some complications have put this solution on hold for the foreseeable future. Don't let the lack of mods affect your decision to move forward and get a nice G90 though.
Just make sure the tubes are in good condition ie little to no visible burn on the tube faces and that the YA board is working. You might do well to stay clear of really low hour examples as the IC421 issue seems to occur early ie less than 2K hours into the life of the chassis. Also make sure you swap out the Dallas chip on the same board before you start to store calibration and geometry settings. Good luck.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Tue Nov 23, 2010 11:11 pm Post subject: |
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full 1080p isnt even resolved on most modern tv sets despite the claims of fullhd and other silly terms, i looked at the 1on 1off pattern and they did not look good.
i havent tested on real expensive television sets though.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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HaydnG90
Joined: 22 May 2006
Posts: 1356
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| Posted: Tue Nov 23, 2010 11:29 pm Post subject: |
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Another thing to consider is the quality of the source material. Rubbish in, rubbish out. No display is going to make a bad transfer look great, just highlight its failings. I have very few titles in my collection that are what I would call reference HD, with the level of image quality that makes your jaw drop. The remastered Gladiator release (thanks Universal), Fifth Element, Avatar and any of the top animated movies from Pixar or Dreamworks are a few of the finest I've seen.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Wed Nov 24, 2010 12:12 am Post subject: |
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| dvh99 wrote: | full 1080p isnt even resolved on most modern tv sets despite the claims of fullhd and other silly terms, i looked at the 1on 1off pattern and they did not look good.
i havent tested on real expensive television sets though. |
That's usually because even though the panels themselves are 1920x1080p and fully capable of resolving every bit of 1080p, the manufacturer designs processing to include a small amount of overscan (scaling). If they didn't, the viewer would often see some garbage or goofy matting at the edges of the screen.
With some digital displays, you can turn off the overscan and do pixel-for-pixel display for a sharper image but, then you have to tolerate any digital noise, goofy edge matting, or anything else that doesn't look quite right at the edges.
Unlike fixed-pixel displays, with our CRT's we have the ability to simply run the picture slightly larger and off the edge of the screen, then use blanking to cover a few pixels on each edge to hide any undesirable non-picture information.
SC
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Wed Nov 24, 2010 12:28 am Post subject: |
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i will try and test again sc thanks, didnt think of the overscan.
but when i looked at the testpattern there didnt seem to be anything cut off the picture, nevertheless i will look into it.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Wed Nov 24, 2010 1:43 am Post subject: |
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I believe Pete Putnam has said that a lot of the flat panels and digital pjs don't do 1080p, because of the cheap electronics being used in the sets.
As for 1080p, it is not the pjs, but the source material. Dizzman over at AVS made a comment along the lines of we are around 1978 and SD in relation to 2010 and HD. I don't think it will take ten years or more to optimize 1080p material, but there is a ways to go. Of course in ten years Crabb will have his 4k pj and never leave his theater.
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ecrabb
Forum Moderator
Joined: 13 Mar 2006
Posts: 15909
Location: Utah
TV/Projector: JVC RS40, Epson 5010
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| Posted: Wed Nov 24, 2010 3:02 am Post subject: |
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| Spanky Ham wrote: | | I believe Pete Putnam has said that a lot of the flat panels and digital pjs don't do 1080p, because of the cheap electronics being used in the sets. |
Hmm... I don't know about that... I could see that statement being applied in relation to crummy video processing that can't properly ITC a 1080i telecined source back to 1080p, but just display a 1080p input? With a 1080p panel and a 1080p input, it ain't exactly rocket science to just display it properly.
| Spanky Ham wrote: | | As for 1080p, it is not the pjs, but the source material. Dizzman over at AVS made a comment along the lines of we are around 1978 and SD in relation to 2010 and HD. I don't think it will take ten years or more to optimize 1080p material, but there is a ways to go. |
I don't if I'd go that far... I mean, the studios shoot with cameras and film with quality well in excess of what 95% of us have in our home theaters. 4k isn't atypical and 2k is. So, while there are certainly improvements to made, things are pretty damn good right now.
| Spanky Ham wrote: | | Of course in ten years Crabb will have his 4k pj and never leave his theater. |
Don't tease me, bro!  Seriously, I don't think people have any idea what that visual orgasm looked like unless they've seen it. My gawd, I'm getting excited just thinking about it.
SC
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Wed Nov 24, 2010 3:45 am Post subject: |
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I just spent a couple of minutes on Pete's site, but I can't find his archives. I found this review:
http://www.hdtvexpert.com/?p=440
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That Pixelworks processor does an excellent job with interlaced content. The HD8200 had no trouble whatsoever with the video and film resolution loss tests from the Realta Blu-ray disc. However, I should mention that a quick test of frequency response, using a 1080p luminance multiburst pattern, showed some filling at 37.5 MHz. That would result in the loss of very fine picture detail, and it’s another thing Optoma may want to look at. |
I believe he had mentioned this same test in some older reviews.
As for source material, I think the capture end is probably pretty good. I think what Dizzman may have been getting at is that there is improvements to be made in compression, bit depth, color gamut, etc.
I am having flashbacks to the JVC demo right now. I still say that the JVC 4k with 4k material was the finest image I have seen and was the best of Cedia 10. Coldmachine and some others still say that cinema DLP is superior, but none of the ones I saw at Cedia were in the same league. Crabb, just think of the windmill.
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WanMan
Joined: 19 Mar 2006
Posts: 10270
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| Posted: Wed Nov 24, 2010 9:31 am Post subject: |
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| ecrabb wrote: | | dvh99 wrote: | full 1080p isnt even resolved on most modern tv sets despite the claims of fullhd and other silly terms, i looked at the 1on 1off pattern and they did not look good.
i havent tested on real expensive television sets though. |
That's usually because even though the panels themselves are 1920x1080p and fully capable of resolving every bit of 1080p, the manufacturer designs processing to include a small amount of overscan (scaling). If they didn't, the viewer would often see some garbage or goofy matting at the edges of the screen.
With some digital displays, you can turn off the overscan and do pixel-for-pixel display for a sharper image but, then you have to tolerate any digital noise, goofy edge matting, or anything else that doesn't look quite right at the edges.
Unlike fixed-pixel displays, with our CRT's we have the ability to simply run the picture slightly larger and off the edge of the screen, then use blanking to cover a few pixels on each edge to hide any undesirable non-picture information.
SC |
My Vizio 1080P plasma allows me to turn off the overscan while the Panasonic 1080P plasma does not. Its not my first or last Vizio flat-panel, but this Panasonic is.
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