Do you display 1080p on your Sony G70? - Page 2

Chad, you can swap lenses with one of my G70s if you want to.

New close ups of the 1 pixel wide lines.

You have anything else you could sweeten the deal with?

Much better depiction. Very nice V 1:1 lines.

Thanks! Actually, I'd like to try a stock lens on the red just to see the difference. The HD 134's are rare and expensive, but if they don't work well with my screen size...

I don't really have a personal interest in the VR lenses and I don't really know the limitations of them.

I'll probably be parting out one of the G70's... it's giving a Error 29, which goes away when I swap out the B board, so if you're just interested in getting a standard set of lenses instead of swapping, just LMK.

It just means the Red and Blue aren't quite as sharp as the Green. It's pretty standard
to get a purplish hue in a 1:1 at that level.

I'd be looking at one colour at a time. Blue is SUPPOSED to be defocused.


Those pictures are pretty good - that's 1080p 60hz right? That's sharper than my XG, and many have said the G70 has inferior bandwidth. Not if that pic is 1080p 60hz, the G70 is just fine.

I think 1080i 96hz is the best res for an 8"er. No judder like 1080p 60hz, no flicker like 1080p 48hz, but you have to try these all for yourself.


PowerStrip timing parameters:
1920x1080=1920,112,128,115,1080,46,5,30,126655,542

Generic timing details for 1920x1080:
HFP=112 HSW=128 HBP=115 kHz=56 VFP=46 VSW=5 VBP=30 Hz=48

VESA detailed timing:
PClk=126.66 H.Active=1920 H.Blank=355 H.Offset=96 HSW=128 V.Active=1080 V.Blank=81 V.Offset=46 VSW=5

Linux modeline parameters:
"1920x1080" 126.655 1920 2032 2160 2275 1080 1126 1131 1161 interlace -hsync -vsync

Have you tried feeding the Lumagen 1080i60 to see if there was any difference in the pattern? I have feed the Lumagen 1080i60 and 1080p24 and the p24 signal showed a sharper image (Used both a Toshiba XA2 HD DVD player and Sharp 20U Blu Ray player with same results). I found this interesting as I was told by Lumangen that there should be no difference between 1080i60 and 1080p24.

I used the 1080 resolution pattern in HD DVE basic HD DVD and also Blu Ray disks.

I have a Sony G90 and inputed 1080p60 from the Lumagen.

Yes, I have and I got the same results (1080i input blurs lines, 1080p/24 input shows lines) with a strange exception. Input 1080i to the Lum and 1080p/60 to the G70, and most of the time it blurs the horizontal lines, like it is doing a poor job of deinterlacing. But if I have the pattern up, go into the Lum's menu, cycle the deinterlacing settings from auto 1 to film, etc, then leave it on auto 1, when I get out of the menu it suddenly clears up when the on screen menu disappears and displays the individual lines like it's supposed to! However, I can't get it to stay like that no matter what I try.
I think Lumagen should address this. I've observed it not only on my G70 but also on a friend's JVC RS20.

What verion firmware date are you using on your Lunagen HDP?

I'm using the second to last firmware from July of '08, I believe.

The one on/one off vertical lines are showing a lack of green so the color is tending toward purple. There needs to be more high frequency output from the green video amplifier to make the lines gray. Green usually poops out first because it takes alot more green than the other colors to make gray.

For an experiment try turning down the contrast and see if the lines don't become more gray.

Forum member Lyckman posted a picture showing closer to ideal responce.

http://archive2.avsforum.com/avs-vb/...&&#post8769734

Scott

if you turn off blue defocus then you will not have a good grey scale, all your colors will look wrong.

And Yes the 9500LC' have a better Video chain, its is a higher bandwidth but that is not the only thing the Marquees video path is very simple. its the cleanest of all PJ video Chains from what Mike Parker has said in the past. And he has looked at i think all makes.

Athanasios

Hi Rajdude,

Glad to see that you are still hanging in CRT world. I think the Marquee has one of the highest bandwidth video systems out there. For years I tried to get owners of different brand projectors to post pics of one off/one on pixel test patterns and got very few takers.

For some reason the blue usually has the worst focus. I don't know why but blue only contributes about 11% of the light so it doesn't hurt so much to be not so good. Probably better to have plenty of blue light from a little defocus than to have perfect blue focus.

Scott

I have all three (G90, 909, Marquee) of the top CRT projectors in my shop.

No question, the Marquee has the highest bandwidth video chain of them all.

Under good testing (one pixel test - sq wave/rise time test), the 909 rates about half of it's published bandwidth.

Yes but grey scale will be off in the mid ire levels.

Here is a suggestion:
One may be able to disable the auto-defocus and have the best of both worlds ie. sharp blue and very good grey scale but you would need something like a Lumangen HDP to do this. The Lumagen offers grey scale adjustment at various points thereby allowing one to correct the mid level ire grey scale.

Has anyone tried this or something similiar?

It is as simple as this, A Stock SONY G70 CANNOT FULLY RESOLVE Standard 1080p @60HZ let alone 1920x1200p @ 96hz... The image produced will undoubtedly be soft compared to A more optimum res like others have recommended....

Cheers....

How do you know it will be soft? Have you tried it?

Yes, the desktop will be soft. But video may not be - there's less information in 1920x1080 video than 1920x1200.

I'm not saying it will be good. I'm saying I don't know.

1 test is worth 1000 opinions.

Hi Mark, FWIW I have A low hour G70 with mint Tubes but would'nt wast my time and effort setting up A res like standard 1080x1920 @60hz when it will not produce optimum results no .... Do it right the first time...

Cheers....

I know.

And I have a low hour XG LC.


They are basically identical in performance (except you have an AKB line).


Doug Baisey once setup an XG at 1200p, that is what the customer wanted. He said it looked good.

I wouldn't do it, but I wouldn't dismiss it without trying it first.

"BTW, why would someone want to use 96 Hz ?"

Because it is a multiple of 24fps and you avoid judder.



"Also isn't the "standard" for 1080p is 24 Hz?" Yes, but you can't watch that on a CRT. You need to go to 48hz (flicker), 72hz, 96hz or 120hz. If you do 96hz or 120hz you really need to make those resolutions interlaced.

How is it down under? HDTV is 1080i 50hz. But Bluray is same as you guys.

Sigh....

Think of 1080i 96hz as 1080p 48hz, but without the flicker. The resolution is the same.

Dark scenes on an XG look great at 48hz, bright scenes give me a headache from the flicker.

Mike

The harder/faster the retrace time to produce the image on the raster the less accurate the image to A point compared to A slower retrace but the down side can produce fliker if you dont set up the optimum Timing & the harder you drive the Tubes the faster they wear no?....

1080i is the same rez as 1080p its just Interlaced instead of Progressive...
Cheers....