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Plasma Calibration

 
 
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Author Steve

INF
Male
#31 | Posted: 27 Nov 2012 11:35 
Hi Mike,

To be honest, I have never tried to use an Eizo screen for a master grading screen, but I think it should be ok using a LUT box...

Penta do indeed load LS LUTs directly into their displays, and LS connects over a network to perform the calibration direct on the display.
See: http://www.lightillusion.com/lightspace_plugins.html
The bottom 'Direct Display Integration' diagram - that is how Penta works.

With FSI we have only just started discussions with them, and they have only just purchased their first license of LightSpace.
Hopefully they will go the same route as Penta with direct calibration integration.

Cheers,

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#32 | Posted: 27 Nov 2012 11:50 
Steve,

thank you, great info.

Since the Eizos are hardware calibrateable as well, why were you never able to achieve a satisfiable result by loading the LUT's directly into their hardware and then turn off the self-calibration ? What is the difference to the Pentas ?

Another follow up question: given a setup where one does utilize a LUT holder box (e.g. eeColor box, LS 65^3 LUT calibration), what is a cheaper screen you can recommend, that when paired with that box becomes a great reference screen, suitable for grading ?

I'm assuming a combo setup with a box brings a lot of other (more affordable) screen manufacturers back into the picture for grading purposes... (?)

Thanks.

- M

Author Steve

INF
Male
#33 | Posted: 28 Nov 2012 21:53 
Hi Mike,

Eizo do not allow thrd-party access to their internal LUTs...
Most display manufacturers that do this do so because they 'know' what they do is not ideal, and so do not want their approach to calibration to be scrutinised by others...
If Eizo were to open up to use we would be very intereested in talking with them, as we have done with penta, and are in the process of doing with FSI.

The difference with Penta is LightSpace has direct access to the display calibration vai the ability to control the display (the display is its own pattern generator) and the LUTs genertaed in LightSpace can be directly loaded into the monitor.

As for questios 2, that really depends on your level of acceptance... Some have had good resuts with a hp Dreamcolor...

But, there are some very good IPS based LCD screen out now.
Really too many to test all of them, so I would start by looking for an IPS LCD screen, woth LED illumination - RGB if possible.
Then check the gamut and RGB separation.

Hope this helps.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#34 | Posted: 28 Nov 2012 22:51 
Steve,

Eizo does give access to third party manufacturer, basICColor (since version 4 AFAIK) has the ability to access and write directly into the hardware LUT of the Eizo...

Heard about the Dreamcolor, I thought the Eizo is a step up to that in display quality... will check it out, there is also the NEC Multisync series...

Thanks.

- M

Author Steve

INF
Male
#35 | Posted: 29 Nov 2012 09:59 
Mike,

Can you send us an example of the Eizo LUT from BasICColor?
We can then add the same format to LightSpace.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#36 | Posted: 29 Nov 2012 11:04 | Edited by: mike_n 
Steve,

I never had basICColor write into the hw LUT of the Eizo, after lots of talks with my Eizo contact I decided to use ColorNavigator (Eizo's own calibration solution) for this task, as this was recommended by Eizo and gets decent results. Unfortunately (same as basICColor) the sw does not allow meter profiling, which really, really disappointed me considering they market this screen as reference color solution with 16-bit internal processing... what's it all good for if the meter you calibrate with is no good (either low IRE problems or color accuracy problems , depending on whether colorimeter or spectro)... I forwarded Eizo and basICColor the request to implement that, and they both stated they were considering implementing it.

Anyways, I read in a forum that Eizo hw LUT access was possible since basICColor v4. I just opened BC v5 on the PC connected to the Eizo, and it does give me the option in the Advanced settings menu to use "Hardware calibration (monitor LUT's)". If I open basICColor 5 on my notebook, this option (obviously) is greyed out. It is also greyed out on another desktop PC with a non-hardware-calibrateable screen connected. So it seems it's possible and the sw recognizes the capability of the screen. How would I send you an example of the LUT created by basICColor for the Eizo if it's written directly into the Eizo ?

These are the options in BC when Eizo screen connected:
> Hardware calibration (monitor LUT's)
> Combined hard- and software calibration
> Software calibration (video LUT's)
> No calibration (profile only)

Let me know what you need.

Also, I have follow up questions regarding our last conversation:

1) Is the HP DreamColor hardware calibrateable, and if so can LS write to the internal hw LUT's ?

--> this screen has it's own calibration solution by HP (DreamColor Advanced Profiling Solution) but I'm not if the screen has hw LUT's

2) is the eeColor box with a LS LUT capable of outputting 10-bit progressive RGB via HDMI for compatible screens such as the HP DreamColor ?

Thanks !

- M

Author Steve

INF
Male
#37 | Posted: 30 Nov 2012 10:01 
BC doesn't use 3D LUTs from what I can see of it... on their website is states 'uses ICC-profiles'...

So, no good for real calibration in our industry.

The Dreamcolor can't have LUTs loaded directly - you need an external LUT boc.

And yep, the eeColor box works with any HDMI signal we have tried it with, and we have customers using it with the Greamcolor.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#38 | Posted: 30 Nov 2012 10:03 
10-bit progressive RGB via HDMI ?

Author Steve

INF
Male
#39 | Posted: 30 Nov 2012 10:08 
HDMI is just a signal connection - it's what ever the display/source combination says it is set to...
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#40 | Posted: 30 Nov 2012 10:30 
I was inquiring for a 10-bit workflow with the eeColor box and the DreamColor...

Since the eeColor box only has HDMI out, we have to work with that, fortunately HDMI 1.3 supports 10-bit data stream... obviously you need a 10-bit capable graphic card and the display must support that bit-rate.

The DreamColor does support 10-bit via HDMI in (other displays - for example only support 10-bit via DisplayPort), but it must be 10-bit progressive RGB, otherwise the DreamColor engine shuts down and switches to 8-bit...

This would be great, as the only other (cheaper) LUT holder box that comes to mind that supports 10-bit is the BMD HD Link Pro, and that box has some issues currently...

So the eeColor box will output whatever the display/source combination is set to ?

Author Steve

INF
Male
#41 | Posted: 30 Nov 2012 10:48 
I'll check with the manufacturer

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#42 | Posted: 30 Nov 2012 11:19 
awesome, thank you !

Author Steve

INF
Male
#43 | Posted: 1 Dec 2012 14:18 
eeColor say:

"This should work. We will be able to confirm sometime in December as we'll have access to Quantum Data HDMI analyser and will be able to verify 10 bits in and out of the box."

Steve
Steve Shaw
Mob Boss at Light Illusion

Author Steve

INF
Male
#44 | Posted: 1 Dec 2012 19:23 
Just found this on the eeColor box user guide:

Note: The TruVue eeColorâ„¢ Application and Processor
support 8, 10, or 12 bits/color and RGB or YCbCr HDMI
color format standards. RGB support includes Video or
Partial Range RGB (16-235) and the PC or Full Range RGB
(0-255).

Steve
Steve Shaw
Mob Boss at Light Illusion

Author mike_n
ZRO
#45 | Posted: 3 Dec 2012 01:08 
Steve,

does the user guide state anything if this is for input AND output ?

- M

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