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Mark_A_W
Joined: 15 Mar 2006 Posts: 3068 Location: Sunny Melbourne Australia
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Link Posted: Mon Apr 26, 2010 11:51 pm Post subject: |
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Nashou66 wrote: | I think the only advantage
that going to a 9 inch set would do for a blend is add brightness,
Athanasios |
Umm...Liquid Coupling? (From memory you're running longbows with HD-144s?)
I noticed an enormous difference when I converted my XG to LC. A haze is removed from the image.
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Tim in Phoenix
Joined: 21 Oct 2006 Posts: 4378 Location: Phoenix
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Link Posted: Tue Apr 27, 2010 12:13 am Post subject: |
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Guys!
The improvement with LC will be in heightened contrast ratio and tighter focus.
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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stefuel
Joined: 07 Mar 2006 Posts: 3353 Location: Green Harbor MA USA
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Link Posted: Tue Apr 27, 2010 1:16 am Post subject: |
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I'll probably be banned from the forum but...
I'll go along with the better contrast ratio and the elimination of halos when using LC optics but I don't subscibe to the idea of better focus. I think a sharper image can be had from a AC projector any day with the right lenses.
_________________ Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Mark_A_W
Joined: 15 Mar 2006 Posts: 3068 Location: Sunny Melbourne Australia
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Link Posted: Tue Apr 27, 2010 1:33 am Post subject: |
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I agree Chip.
For 1:1 test patterns my XG was sharper with HD-144s, compared to LC with HD-18s. And the corners were sharper.
But on video content the LC is "clearer". The washout caused by the light spill is always present with AC lenses. The removal of this haze was the biggest improvement for me. The "clearer" video appears sharper to your eye.
Now, if you go from HD-144s to HD-10s, this will be a different story. HD-10s are much bigger, and better, than HD-18s (even with an 8" tube).
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stefuel
Joined: 07 Mar 2006 Posts: 3353 Location: Green Harbor MA USA
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Link Posted: Tue Apr 27, 2010 2:06 am Post subject: |
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OK, back to this blending crap.
Humor me. Shut off the blend zone. Put up a 100 IRE "full" white field. Stick your sensor dead center on both green lenses and report back the intensities. Ten bucks and my left one, says the left side is lower. If so, increase the left side to match the right and re-do the left calibration.
Why do I say this??? Cause when I look at your screen shots, the color looks OK but the overall contrast between the two looks off.
As everything revolves around the green, they have to match first. If you start with two greens that are putting out exactly the same amount. You are forced to add the correct amount of red and blue to each to hit their respective d6500 target.
Even if your meter is off, as long as they both match, they should be OK, at least for hiding the blend zone.
For now, I'm only interested in the results of the green test
_________________ Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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km987654
Joined: 25 Jul 2007 Posts: 2852 Location: Australia
TV/Projector: Barco BG809s
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Link Posted: Tue Apr 27, 2010 4:15 am Post subject: |
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Nashou66 wrote: | JustGreg wrote: | I think I just peed myself a little! WOW! |
Thanks for the WOW Greg Its what I say each time i get closer to the final set up. I have been watching movies a lot lately.
I was almost going to take her down and go with a single 9500 and sell off the longbows. But with Bobs help and my tenacity
to push on I will get this nailed!!!
I set up the 9500LC i have on the floor last week for a few movies and realized an 8 inch blend blows away the single
9 inch. Even if stacked brightness is not the issue, clarity is what its all about and that film like image.
I think this week i will work on using the Contrast modulation as right now i am not using it. but i need to first get a little closer in matching up the IRE's. With a probe that I think is flaky and the D2 probe that is not 100% either its difficult to say weather or not i can trust the reading i am getting. But getting the xyY values as close as possible for 30 and 80 IRE on each pj got me that much closer. If I use the CMS in the lumagens to match each IRE i think that will help enormously.
I know having a pro do the set up would make this a done deal, but where is the fun in that?
Athanasios |
This is obviously a stupid question but whats wrong with these images?? I just can't see anything to worry about they look great to me.
Or is this a case of "beauty is in the eye of the beholder" thing?
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incova
Joined: 27 Nov 2006 Posts: 789 Location: london
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Link Posted: Wed May 05, 2010 3:11 am Post subject: great stuff |
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I am loving this thread, blend on the cheap, I should be in Athens in August, when are you going to Greece next?
_________________ The more I learn
the less I know.
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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Link Posted: Wed May 05, 2010 3:32 am Post subject: Re: great stuff |
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incova wrote: | I am loving this thread, blend on the cheap, I should be in Athens in August, when are you going to Greece next? |
i might go end of september to Thessaloniki. i might try to go to Athens and see Napos and possibly the new Marquee Greek guy Thanasi Pantazis.
There ares till some issues and not finished features with these units but they are pretty great for the money.
Athanasios
_________________ Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
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Boilermaker
Joined: 21 May 2006 Posts: 527
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Link Posted: Wed May 05, 2010 9:48 am Post subject: |
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Quote: | There ares till some issues and not finished features with these units but they are pretty great for the money. |
Athanasios - You are way too humble on this one!
I think that blending a pair of LC crt's is an all out assault on today's state of the art. That fact that it doesn't cost too much is just an added benefit.
Bob
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incova
Joined: 27 Nov 2006 Posts: 789 Location: london
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Link Posted: Wed May 05, 2010 10:30 pm Post subject: when |
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we could meet maybe, lets see how it goes I go end of August
_________________ The more I learn
the less I know.
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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Clarence
Joined: 08 Mar 2006 Posts: 3792 Location: Smith Mtn Lake, VA
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Link Posted: Wed May 12, 2010 6:19 pm Post subject: |
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Looking really good!
I remember from Cliff's, the toughest scene to blend is a solid blue area, like a panning sky or the opening castle scene from a Disney movie.
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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Link Posted: Fri Oct 15, 2010 6:33 pm Post subject: |
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Well zone contrast modulation is a Must!!!!!!
I know I always say this but this is the best for sure!! Just have to tweak out the 100 IRE gamma and a few spots in between.
I also have a slight linearity issue in the center. I messed something up when sitting on the remote with my fat ass and lost the settings and I never saved the file in the Marquee loader
I also found that my DIY HCFR meter worked better in the low end with HCFR than CalMan or Chromapure and the i 1 Pro or my Chroma 5 probe. I say this cause it was more stable with in readings, not as much jumping around. id it is as accurate or not i can't say but Id rather have consistent readings in the low end then erratic.
The Radiance XS's also helped out more than you know and a PM from Ken Whitcomb to solidify and confirm my workflow process.
I used the radiance internal patterns in calman and the marquee controller program to first get 30 and 100 % windows close on each PJ. hen i went back and checked the 30 % window with Green only ad measured the luma, i moved the probe over and matched the other PJ's green 30 % luma. I then did the same with 100% green's luma, using G2 and Drive respectfully.
I then redid 30 and 100 % RGB in the PJ. now I moved to zone contrast, i set a 100% window and lowered contrast to
30 from 50. Here i used the marquee controller Program and did each color at the top , center and bottom edges where the blend zone would be. Blend zone is off of course and using a full field pattern. I did this on both PJ's. then I went back and raised contrast to 50 and then did the same thing in the zones but with white on not only each color and used the marquee controller program to do RGB contrast in each zone in the blend area. The Marquee controller program is awesome cause you never see any menu on the screen to contaminate your readings. You can select the zone to work on and the color to adjust all on one screen, just awesome!!!
After that was done I redid the center 30 and 100% white windows with the pattern not sized for the raster but put into full blend configuration but with the blend zone off. This put the window patterns in the center of the screen where the blend zone is. I put the probe there and redid the PJ RGB at those %'s mentioned above.
Once that was done i was surprised to see how well even with no radiance greyscale done the blend zone was!!!
So now I did the Greyscale interactive mode with CalMan v4.1 and the radiance XS. did that and getting 20 and 10 % sucks that way. Still got the erratic readings at 10 more than 20 so I decided to try my home made probe and HCFR and do it manually. I then adjusted Contrast and Brightness on both PJ's .
Got that done just now and took some pics
I used a gamma of 2.35 but have to tweak it out. I might try 2.25, or 2.3
and see how it all looks. But for now I am very happy.
EDIT, i didn't even do and Color adjustments Just greyscale!! Both PJ tracked the CIE chart almost the same,
I did not measure RGBCMY luminance though as that will also help.
Athanasios
_________________ Don't blame your underwear for your crooked ass~ unknown Greek philosopher
"Republicans believe every day is the Fourth of July, but the Democrats believe every day is April 15." --- President Reagan
One Smart Dog!!!
Marquee High Performance Bellows now shipping!!
Marquee Modifications and Performance Enhancement
Marquee C-element and Bellow removal
Last edited by Nashou66 on Fri Oct 15, 2010 6:35 pm; edited 1 time in total
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Curt Palme CRT Tech
Joined: 08 Mar 2006 Posts: 24296 Location: Langley, BC
TV/Projector: All of them!
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Link Posted: Fri Oct 15, 2010 6:35 pm Post subject: |
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In the terms of suckage, this ranks right up there.
Good work! YOU SUCK!
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overclkr
Joined: 08 Mar 2006 Posts: 4227
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Link Posted: Fri Oct 15, 2010 7:41 pm Post subject: |
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Looking good!
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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AnalogRocks Forum Moderator
Joined: 08 Mar 2006 Posts: 26690 Location: Toronto, Ontario, Canada
TV/Projector: Sony 1252Q, AMPRO 4000G
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Link Posted: Fri Oct 15, 2010 10:51 pm Post subject: |
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Gee I'd like to see that
_________________ Tech support for nothing
CRT.
HD done right!
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Nashou66
Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY
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