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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: Sun Dec 14, 2014 12:31 am Post subject: |
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| jbmeyer13 wrote: | | My BD player is a Samsung BD-6900. I'm going to try the bmp version later tonight and will report back. |
You might be up the creek, Justin. Unless other formats are supported, but undocumented, the only image format it specifically says in the manual it supports is JPG. I tried saving out a max quality JPG, and it adds a significant amount of crap to the image, though it'll probably all be imperceptible on a CRT, and possible even a digital with gamma cranked up. It's not ideal, but it should work fine, I'd think.
Cheers,
SC
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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stridsvognen
Guest
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| Posted: Sun Dec 14, 2014 1:39 am Post subject: |
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Here is another one.
JVC RS50
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Dec 14, 2014 2:22 am Post subject: |
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Kurt is it the angle of the photo that causes the lower IRE 1-1 parts to look darker there?
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Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Dec 14, 2014 7:54 am Post subject: |
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Ok, just as expected, my NEC XG at 1080i-96Hz (125MHz pixel clock) 
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126.75 KB |
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9338 Time(s) |
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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stridsvognen
Guest
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| Posted: Sun Dec 14, 2014 8:06 am Post subject: |
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| CasetheCorvetteman wrote: | | Kurt is it the angle of the photo that causes the lower IRE 1-1 parts to look darker there? |
The angle helps making the pic look right.
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CasetheCorvetteman
Joined: 09 Nov 2008
Posts: 6326
Location: Australia
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| Posted: Sun Dec 14, 2014 8:09 am Post subject: |
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| gjaky wrote: | | Ok, just as expected, my NEC XG at 1080i-96Hz (125MHz pixel clock) |
What does 1080p 50Hz look like?
Have you got the gamma turned down too far?
_________________
Barco Cine 9, ,Sony VPL570ES 4K SXRD, 135" OZ Theatre Majestic 16:9 screen, Denon X6700in preamp mode, 2x 7ch Tonewinner amps, 2x Tonewinner 15" subs, 2x 10" subs, 7.2.6...
RUNCO DTV991 LC ( NEC XG 852 LC ) 100" 4:3 screen, H/K AVR 7.1...
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stridsvognen
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| Posted: Sun Dec 14, 2014 8:27 am Post subject: |
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| gjaky wrote: | | Ok, just as expected, my NEC XG at 1080i-96Hz (125MHz pixel clock) |
It more or less what to expect from a CRT, you have just about no visible high resolution at low level.
This pattern is also very good to use looking into the lenses, see if any of the boxes has distortion/ noise of any kind.
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Dec 14, 2014 8:33 am Post subject: |
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| CasetheCorvetteman wrote: |
What does 1080p 50Hz look like? |
I guess even worse 
| CasetheCorvetteman wrote: |
Have you got the gamma turned down too far? |
No, but this image uses 0-255range, while movies are in the 16-235, the projector's blacklevel is set to level 16 so I can watch them without colorspace scaling, with this the normal pictures are somewhat darker, but I use the projector exclusively for movies anyway.
_________________
projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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gjaky
Joined: 05 Jun 2010
Posts: 2802
Location: Budapest, Hungary
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| Posted: Sun Dec 14, 2014 8:38 am Post subject: |
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| stridsvognen wrote: | | gjaky wrote: | | Ok, just as expected, my NEC XG at 1080i-96Hz (125MHz pixel clock) |
It more or less what to expect from a CRT, you have just about no visible high resolution at low level.
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No, I have no visible high resolution AT ALL 
My projector still suffers from the low-bandwidth disease, this is NOT how it should look on an XG... I wasn't kidding with the 30MHz bandwidth, this is what my projector really can do.
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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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stridsvognen
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| Posted: Sun Dec 14, 2014 10:17 am Post subject: |
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| gjaky wrote: | | stridsvognen wrote: | | gjaky wrote: | | Ok, just as expected, my NEC XG at 1080i-96Hz (125MHz pixel clock) |
It more or less what to expect from a CRT, you have just about no visible high resolution at low level.
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No, I have no visible high resolution AT ALL
My projector still suffers from the low-bandwidth disease, this is NOT how it should look on an XG... I wasn't kidding with the 30MHz bandwidth, this is what my projector really can do. |
You still have better horizontal line output than i have on my JVC.
Ill have to try this pattern on my G90, i guess it will look some like the standard Marquee, with a bit more noise and peaking distortion.
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stridsvognen
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| Posted: Sun Dec 14, 2014 12:02 pm Post subject: |
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Did just run this new pattern on the G90, and it holds a very nice 1:1 at 148Mhz, but it has peaking distortion, and a LOT of harsh noise at the low level patterns, and roling some off on the blue compared to red and green.
I then put in my MP BA board, and its better in regards to peaking distortion and noise, but still quite noisy.
Some day ill have to try a G90 tube and focus coil setup on a Marquee with the clean high bandwidth video chain. Not sure i need the tubes, but the focus system would be nice.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Dec 14, 2014 12:14 pm Post subject: |
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Ok a shot of the pattern on my CineMax. The low ire turns a little red. I checked the calibration and that was reasonable good.
At 90/95 ire the 1:1 seems best.
I did not see any noise at any level but perhaps I do not know what to look for.
1080p@60 with the new Moome. Switcher board and driver board modified with opamps and a transistor.
edit: pics not correct bad switcher.
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701s->runco933->8500ultra->cinemax->9500mp->919 splitpack + cinemax
Last edited by redfox001 on Tue Jan 19, 2016 4:49 pm; edited 4 times in total
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stridsvognen
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| Posted: Sun Dec 14, 2014 12:21 pm Post subject: |
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| redfox001 wrote: | Ok a shot of the pattern on my CineMax. The low ire turns a little red. I checked the calibration and that was reasonable good.
At 90/95 ire the 1:1 seems best.
I did not see any noise at any level but perhaps I do not know what to look for.
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What bandwidth/ resolution, and what input card/ DAC.?
Your pic looks very much like the NEC, just that you have roleoff all the way up to the 3:3 pattern.
Did you mod or change any opamps or stuff in your video chain.?
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Dec 14, 2014 12:28 pm Post subject: |
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I added the information you ask for My guess is this barco doe 60MHz almost
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stridsvognen
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| Posted: Sun Dec 14, 2014 12:30 pm Post subject: |
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| redfox001 wrote: | | I added the information you ask for My guess is this barco doe 60MHz almost |
If i was you i would revers the mods and see if it dont look better, this looks worse than i expected.
High bandwidth opamps and transistors dont always behave like you expect, you can very well get the oposit result.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Dec 14, 2014 12:38 pm Post subject: |
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It looks a little better when I use the vga solution on port 5 that I showed earlier. The switcher is modified by Mike Parker and I added one transistor mod. The opamp on the driver was token from a Mike Parker modified driver. I don't think that there is the problem. The noise is far better than with vga.
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701s->runco933->8500ultra->cinemax->9500mp->919 splitpack + cinemax
Last edited by redfox001 on Sun Dec 14, 2014 12:55 pm; edited 1 time in total
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Dec 14, 2014 12:48 pm Post subject: |
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| Nashou66 wrote: | It also seems this pattern will be good for setting up G2 settings to get a more balanced greyscale. Fox's red lower IRE's illustrates
this point.
Nashou |
Yes you are right it shows a bad grayscale very clearly. To bad on the Barco the g2 is automatic. I will compare this with a port 5 pc vga picture because maybe Strid is right that my transistor mod on the switcher did something in the color balance. But it might also be normal behaviour I hope others will post some pics to compare.
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redfox001
Joined: 16 Mar 2009
Posts: 2257
Location: The Netherlands
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| Posted: Sun Dec 14, 2014 12:54 pm Post subject: |
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But there is a blacklevel pot on the neckboards.
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