| Forums | Register | Polls | Search | Statistics | File Bank | 
 (?)  
You must be logged in to post content on this forum.
Display Calibration Light Illusion Forums / Display Calibration /  
 

Colour Calibration for JVC DLA X70R

 
 
Page  Page 2 of 3:  « Previous  1  2  3  Next »

Author Harry
ZRO
#16 | Posted: 19 Jan 2013 19:26 
In addition::
I've set "screen adjust" (user meu -> "Installation") from 000 to 094.
Whit this I've got a much better RGB balance close to 6500K as basis for calibration (have a white screen).
But this may vary from PJ to PJ, so maybe you should check other values (035 or 001 may also be a good setting)

Author Margus
ZRO
#17 | Posted: 12 Feb 2013 13:10 
Hi.

I think i got much better results as went to 094.

I have to go back and re calibrate now i think

I have RS55 with my client here.

Also found out that HDLink gives only 8 bits in deep color field.

Should probably go with ee box?

Author Margus
ZRO
#18 | Posted: 12 Feb 2013 13:21 
Harry

I wonder what do you mean by L2?

Author Harry
ZRO
#19 | Posted: 12 Feb 2013 18:55 
That refers to the service menu (not the normal user menu), where you can also disable eShift.
How to get access:
http://www.avforums.com/forums/16005094-post963.html

Author Margus
ZRO
#20 | Posted: 12 Feb 2013 21:30 
Wow, thnx.

Will see how t works ot for me.

Author Margus
ZRO
#21 | Posted: 27 Feb 2013 07:21 
QP gave me 90% of gamut on rec709.

Should i be happy or tweak some more ?

Author Steve

INF
Male
#22 | Posted: 27 Feb 2013 08:09 
That's the low-end of acceptable...

With a 'good' with an initial wide gamut display I'd expect high 90's.

What does the original profile CIE diagram show?
That shows what the display is really capable of.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author Harry
ZRO
#23 | Posted: 17 Mar 2013 23:34 
Amazing!


Todays result of my X70's full display characterization: 98% for peak Luma / 99% for peak Chroma!

X70 Settings:
Color Profile: Cinema 1 (= enhanced color space, with internally green filter)
Lamp Power: Normal
Lens Aperture: 0
Contrast: 0
Brightness: 1
User Gamma 1 = pre-autocalibrated by Calman 5.1 at Gamma 2.2 (D65), pattern source = JVC internal.

Measurement Setup (for LightSpace):
Pattern Source = Radiance XS, full size
Probe = i1Display3, profiled with i1Pro2

Display Characterization Settings:
Cube Side: 10
Hybrid 1D+3D: Enabled

Probe Options:
Integration Time: = 1,5s
Extra Delay: 1s
Display Type: Burst / Projector
Avg. LLM: Enabled
Active Probe: i1D3
Reference Probe: i1Pro2

Color Space Convertion:
Source: Rec709
Gamma: 2.2
Filter: Relax 0.8

The resulting LUT was uploaded in the Radiance XS (as 125 pt LUT)

A simple control measurement done by Calman looks very good at all, just red is a bit aside in the color checker CIE chart (stimulus level was set at 75%):

Only the RGB balance is a bit off; but the total gamma of 2.21 do match, as it was set as target gamma in LS's Color Space Convertion:

The RGB balance after CM's pre-autocal was only +/- 2%, now with LS it's -3 / +5 (worst). But that's ok!

Finally - I'm totally impressed about the picture quality on screen ...


Just one last comment - the picture improvement due to the full display characterization, compared with the quick I've done before, was really remarkable! Not least the now absolutely natural looking skin tones are impressive ...

Author Steve

INF
Male
#24 | Posted: 18 Mar 2013 08:41 
Hi Harry, that's great news!



I think a 17^3 profile would help further - but to be honest I doubt you would 'see' the improvements!
Steve Shaw
Mob Boss at Light Illusion

Author Michael S
ZRO
#25 | Posted: 2 Apr 2013 10:05 
Hi Harry,

Where did you get the this service menu intelligence from?
Is there a service menu manual you could point me to, because I really want to get into this with my rs55 but don't want to just mess around with sliders when I don't understand their effect.

Thanks,

Michael.

Author Harry
ZRO
#26 | Posted: 3 Apr 2013 12:40 
Hi Michael

I don't have any service manual, just have done experiments to see what's happen.
It was harmless, because I found out, a factory reset do reset the "L2" sliders back to stock settings.

So if you take a closer look at the "L2" parameters, you will see, each colour profile has it's own individual "L2" setting.
But once again, to get your setting active, you must open the normal user OSD and there you have to switch to an other color profile and back to the one you have done the modification in the SM.


Author christherodgers
ZRO
#27 | Posted: 2 Jun 2013 18:51 
Steve, please could you elaborate and give specifics as to why you've found the JVC D-ILA's unfit for use? What projector would you reccommend in a similar price range?
Thanks
Chris

Author Steve

INF
Male
#28 | Posted: 2 Jun 2013 19:11 
In simple terms, all the JVC D-ILA projectors we have tested come nowhere near the specs JVC quote - and I mean nowhere near...
Much lower luminance, and much lower colour gamut, making the projector next to impossible to calibrate accurately.

All-in-all, just not capable of meeting spec.



As for alternatives, we always suggest Dark Chip TI based projectors - SIM2 or ProjectionDesign for example.

Steve
Steve Shaw
Mob Boss at Light Illusion

Author christherodgers
ZRO
#29 | Posted: 2 Jun 2013 20:24 
Hmm, that's interesting. We have a JVC RS65 and have had it profiled with a Truelight probe. We found that the gamut covers P3, and the luminance (almost) matches our Sony CRT - around 24 ft-L, (although I should add that we're using a high gain screen). Admittedly, the performance out-of-the-box is a bit wacky, but with a bit of external colour management all seems well.

Author Steve

INF
Male
#30 | Posted: 2 Jun 2013 20:46 
We would never use a high gain screen, as the blacks will be lifted, as well as the hot-spot problem...

And we have never got one of these projectors to hit P3 - not close.
Have you verified the secondaries as well as the primaries, and also verified the gamut in the lower-light levels?
All these are problematic with the projector.

You really need to run a full 17^3 cube based profile - that will show the real display settings.

Steve
Steve Shaw
Mob Boss at Light Illusion

Page  Page 2 of 3:  « Previous  1  2  3  Next » 
You must be logged in to post content on this forum.
Display Calibration Light Illusion Forums / Display Calibration /
 Colour Calibration for JVC DLA X70R

 

 
 
Online now: Guests - 1
Members - 0
Max. ever online: 22 [12 Jul 2022 20:37]
Guests - 21 / Members - 1