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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Fri May 29, 2009 12:47 pm Post subject: Lumagen Radiance now Supports 72 Hz! |
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I am so happy about this I had to post. After working with Lumagen on this for some time, I got to try their new FW yesterday for 817x1920 @ 72 Hz. My impressions were really good so they went ahead and gave it a general release yesterday evening. The new FW seems to work perfectly at extracting 24 Hz from 60 Hz sources, and for tripling 24 Hz to 72 Hz.
The Radiance processors I feel give the best image I have ever seen on my G90 especially at 72 Hz. But until yesterday, the Radiance had troubles with falling out of film mode when running 72 and the screen would start tearing. Because of this, I have been stuck at 60 Hz since the Radiance was released... Well not anymore!
Also, another Radiance tip for 9" Marquee and 9" Sony CRTs... The Radiance has a full CMS and can fully correct primary and secondary colors. However, I don't generally like the way a digital CMS works with a CRT. That being said, the 9" Sony and Marquee projectors have a supper duper over saturated red primary. What I generally do with a Radiance on these CRT's is to partially correct the red primary. This brings in the red a little bit without applying full correction, and I think it looks absolutely fantastic this way.
To partially correct the red primary go into the CMS menu and then go into the CMS matrix. On the red, reduce the red from 1024 to 1015 and add between 60~75 of blue. This will bring red a bit closer to reference without sacrificing image punch. And those numbers should apply to all 9" Marquee and Sony projectors.
After you do it, all the colors will feel more natural and seem clearer.
craigr
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Gino
Joined: 22 Apr 2006
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Location: Trinity Beach, AUSTRALIA
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| Posted: Sat May 30, 2009 6:25 am Post subject: |
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What do you do when watching 16:9 material? Drop back to 60Hz, 48Hz, crop the top and bottom to keep it 2.35:1 for 72Hz, or black bars on left and right for acitve pixels of 1454x817@72?
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Sat May 30, 2009 2:20 pm Post subject: |
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| Gino wrote: | | What do you do when watching 16:9 material? Drop back to 60Hz, 48Hz, crop the top and bottom to keep it 2.35:1 for 72Hz, or black bars on left and right for acitve pixels of 1454x817@72? |
What I personally do for 16x9 is drop down to 60Hz. Others do 48Hz, but I don't like the flicker.
If you wanted to stay at 72 Hz for 16x9 is is doable and you can keep 1:1 mapping without black bars on the sides at all. However, what you need to do is crop the image slightly on all for sides to eliminate pixels. Then you have to set the output resolution to match the new input resolution with reduced pixels. That way you keep full 16x9 and can run 72Hz.
I posted the other day about this. You can get a spread sheet off my web page for doing the calculations required to run 16x9 72 Hz. Here is a link http://www.cir-engineering.com/bin/clock_calc.xls.
Gion, I wanted to talk to you about something else so it is ironic that you posted to this thread... I just sent you a PM 
craigr
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Gino
Joined: 22 Apr 2006
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Location: Trinity Beach, AUSTRALIA
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| Posted: Sun May 31, 2009 1:50 am Post subject: |
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| CIR Engineering wrote: | | Gino wrote: | | What do you do when watching 16:9 material? Drop back to 60Hz, 48Hz, crop the top and bottom to keep it 2.35:1 for 72Hz, or black bars on left and right for acitve pixels of 1454x817@72? |
What I personally do for 16x9 is drop down to 60Hz. Others do 48Hz, but I don't like the flicker.
If you wanted to stay at 72 Hz for 16x9 is is doable and you can keep 1:1 mapping without black bars on the sides at all. However, what you need to do is crop the image slightly on all for sides to eliminate pixels. Then you have to set the output resolution to match the new input resolution with reduced pixels. That way you keep full 16x9 and can run 72Hz.
I posted the other day about this. You can get a spread sheet off my web page for doing the calculations required to run 16x9 72 Hz. Here is a link http://www.cir-engineering.com/bin/clock_calc.xls.
Gion, I wanted to talk to you about something else so it is ironic that you posted to this thread... I just sent you a PM
craigr |
Craig, do you mind posting your timings for 1920x1080p72? I can't do it without exceeding 150Mhz pixel clock. I was told by Jim at lumagen that their vp doesn't support greater than this. I have managed to get it working on the VP50Pro but they allow 165Mhz pixel clock if i remember correctly.
I've responded to your PM.
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Mon Jun 01, 2009 1:45 pm Post subject: |
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| Gino wrote: | | CIR Engineering wrote: | | Gino wrote: | | What do you do when watching 16:9 material? Drop back to 60Hz, 48Hz, crop the top and bottom to keep it 2.35:1 for 72Hz, or black bars on left and right for acitve pixels of 1454x817@72? |
What I personally do for 16x9 is drop down to 60Hz. Others do 48Hz, but I don't like the flicker.
If you wanted to stay at 72 Hz for 16x9 is is doable and you can keep 1:1 mapping without black bars on the sides at all. However, what you need to do is crop the image slightly on all for sides to eliminate pixels. Then you have to set the output resolution to match the new input resolution with reduced pixels. That way you keep full 16x9 and can run 72Hz.
I posted the other day about this. You can get a spread sheet off my web page for doing the calculations required to run 16x9 72 Hz. Here is a link http://www.cir-engineering.com/bin/clock_calc.xls.
Gion, I wanted to talk to you about something else so it is ironic that you posted to this thread... I just sent you a PM
craigr |
Craig, do you mind posting your timings for 1920x1080p72? I can't do it without exceeding 150Mhz pixel clock. I was told by Jim at lumagen that their vp doesn't support greater than this. I have managed to get it working on the VP50Pro but they allow 165Mhz pixel clock if i remember correctly.
I've responded to your PM. |
Gino,
You can't yet run full 1080p at 72Hz on the Radiance. If you want to run 16x9 you need to crop a little off the top, bottom, and sides to keep 1:1 mapping and stay within the clock range of about 148500000.
I am pushing Lumagen to allow clock rates above that but at this point they have other priories first.
craigr
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JETI 1211 Spectroradiometer
Photo Research PR-650 Spectroradiometer
Klein K10-A Colorimeter
Murideo Fresco SIX-G HDMI 2.x Multimedia Generator
Murideo Fresco SIX-A HDMI 2.x Analyzer
Light Illusion ColourSpace XPT Color Calibration Software
Light Illusion LightSpace XPT Pro Version 10.x Color Calibration Software
OMARDRIS JVC Software Patch to use K10-A and Jeti with JVC OEM AutoCal Software!
Sencore CR7000 CRT Tube Analyzer / Rejuvenater
Authorized Dealer for Lumagen & just about everything worth buying
www.CIR-Engineering.com - craigr@cir-engineering.com
Phone: 865-405-6892
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Gino
Joined: 22 Apr 2006
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Location: Trinity Beach, AUSTRALIA
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| Posted: Tue Jun 02, 2009 2:42 am Post subject: |
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| CIR Engineering wrote: | Gino,
You can't yet run full 1080p at 72Hz on the Radiance. If you want to run 16x9 you need to crop a little off the top, bottom, and sides to keep 1:1 mapping and stay within the clock range of about 148500000.
I am pushing Lumagen to allow clock rates above that but at this point they have other priories first.
craigr |
Lol... I remember pushing them for this 2 years ago! There was talk of an external DAC also to frame triple 1080p24 to 1080p72. I'm no longer holding my breath
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Nashou66
Joined: 12 Jan 2007
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Location: West Seneca NY
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| Posted: Tue Jun 02, 2009 7:13 am Post subject: |
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Gino I d pull out one of those Tv-one units and just set up one marquee so you get the feel of how the resolution editor program works, for the custom timmings and pixel clock. Those units i have had up to 204mhz pixel clock just messing around and it looked pretty good on the marquee longbow, not 100% fully resolved but i think it was the limitation of the Moome Vim HD. I plan to try again with RGBHV to the Pj to see how she looks that way.
But i wish I had the scratch for the radiance to add to the chain because they still are working on a custom gamma curve program for the units.
Athanasios
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Gino
Joined: 22 Apr 2006
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| Posted: Wed Jun 03, 2009 9:40 am Post subject: |
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Athanasios, I assume that sort of pixel clock is only able to be utilised via analog outputs and not digital?
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Person99
Joined: 09 Mar 2006
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| Posted: Thu Jun 11, 2009 3:07 pm Post subject: |
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| CIR Engineering wrote: |
I am pushing Lumagen to allow clock rates above that but at this point they have other priories first.
craigr |
Given the incredibly small (and shrinking market) for this, I bet they don't every "get around to it".
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Nashou66
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Gino
Joined: 22 Apr 2006
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| Posted: Mon Jun 15, 2009 12:07 am Post subject: |
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| Nashou66 wrote: | | Gino wrote: | | Athanasios, I assume that sort of pixel clock is only able to be utilised via analog outputs and not digital? |
Digital also Gino !!!! the Tv-One guys have a super high rez display that they pushed 1080p@85Hz just over 200 Mhz, they think they could have gone hihger but the display was maxed out  |
I didn't know that DVI could carry that much... very cool
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