View Full Version : What CAN'T I do with a NIST certified Chroma5?


tonyptony
06-26-09, 04:37 PM
I'm pretty sure I'd be able to do grayscale. :) But is it good enough (assume good software like CalMAN) to really dial in the primaries? What won't it do?

Is having it certified the same as having it profiled? If not, then what happens if it's not profiled?

I've read through a lot of stuff here, but my pea brain has not been able to uncover these answers.

Display is an Elite 111FD.

TomHuffman
06-26-09, 05:03 PM
I'm pretty sure I'd be able to do grayscale. :) But is it good enough (assume good software like CalMAN) to really dial in the primaries? What won't it do?

Is having it certified the same as having it profiled? If not, then what happens if it's not profiled?

I've read through a lot of stuff here, but my pea brain has not been able to uncover these answers.

Display is an Elite 111FD.It works quite well with that display. Just expect a little less accuracy than you would get from a reference spectroradiometer, especially with green. But even here the errors are not huge, generally 0.01xy or less.

Just put the Elite into Pure mode and raise the color control a couple of ticks. Its color will be just about as good as you can get it.

tonyptony
06-26-09, 08:26 PM
It works quite well with that display. Just expect a little less accuracy than you would get from a reference spectroradiometer, especially with green. But even here the errors are not huge, generally 0.01xy or less.

Just put the Elite into Pure mode and raise the color control a couple of ticks. Its color will be just about as good as you can get it.

Tom, you pique my interest. Your last statement seems to fall away somewhat with the adjustments generally provided by others, especially so from the measured recommendations of D-Nice.

I intend no peeing match here (let me say that upfront). But I'd like some elaboration on your advice. Do you have some measured data for this sort of adjustment? I've also read that the 111FDs made in '09 do not calibrate out quite the same way as the '08 9Gs. Makes having the tools to cal (I'm no expert but I do have a little experience) maybe a good thing.

TomHuffman
06-26-09, 09:13 PM
I intend no peeing match here (let me say that upfront). But I'd like some elaboration on your advice. Do you have some measured data for this sort of adjustment? I've also read that the 111FDs made in '09 do not calibrate out quite the same way as the '08 9Gs. Makes having the tools to cal (I'm no expert but I do have a little experience) maybe a good thing.Not sure exactly what you are asking. Could you be more specific?

Understand, I was talking about the gamut only. The Elites still need a custom gray scale calibration.

tonyptony
06-26-09, 09:21 PM
Sorry, I guess what I meant was that it sounded like you were saying that just adjusting the Color in Pure mode might be all I should do to get accurate (now that I understand) gamut. But if this is the case then wouldn't the recommendations found here in the 9G thread (in Plasma) run counter to that?

Also, in your experience, have you also found that the 9Gs made in '09 are not quite the same (in terms of getting them dialed in) as the ones made in '08?

TomHuffman
06-26-09, 10:29 PM
Sorry, I guess what I meant was that it sounded like you were saying that just adjusting the Color in Pure mode might be all I should do to get accurate (now that I understand) gamut. That's exactly what I am saying.

But if this is the case then wouldn't the recommendations found here in the 9G thread (in Plasma) run counter to that?I asked you to be more specific. What EXACTLY are you referring to regarding steps required to get an accurate gamut? The Elite CMS is fubar, isn't really necessary, and thus I wouldn't recommend using it.

Also, in your experience, have you also found that the 9Gs made in '09 are not quite the same (in terms of getting them dialed in) as the ones made in '08?The biggest differences between the 8G and the 9G are:

1) The 9G have better contrast and much lower black level.
2) The 9G non-Elites removed the ability to do a service-level custom grayscale calibration. You have to use ControlCAL for this. The 9G Elites continue to offer adequate grayscale controls in the user menu.

You asked for some numbers. Here's what I got from a PRO-111FD I did just a couple of weeks ago.

x y Y CIE94
R 0.6430 0.3300 0.2132 0.5
G 0.2920 0.6040 0.7042 1.3
B 0.1515 0.0618 0.0779 0.7
Y 0.4201 0.5032 0.9343 0.4
C 0.2190 0.3260 0.7742 1.0
M 0.3260 0.1580 0.2855 0.7
0.8 Ave.


Any additional improvement would be below the threshold of visibility. The Pioneer Elite plasma is the easiest high-end display I can think of to calibrate.

A bigger problem than the actual calibration is ensuring that some of the gotcha "features" are turned off, such the room sensor and the auto-sizing.

tonyptony
06-27-09, 07:28 PM
The biggest differences between the 8G and the 9G are:

1) The 9G have better contrast and much lower black level.
2) The 9G non-Elites removed the ability to do a service-level custom grayscale calibration. You have to use ControlCAL for this. The 9G Elites continue to offer adequate grayscale controls in the user menu.

Tom, what I was referring to was D-Nice's statement that the 9G Elites manufactured in '08 seem to calibrate out differently than those which were manufactured in '09. The context of my question was whether you had taken note of whether any '09 manufactured Elite models resulted in cal settings in which the results may not have been as consistent.

TomHuffman
06-27-09, 08:24 PM
Tom, what I was referring to was D-Nice's statement that the 9G Elites manufactured in '08 seem to calibrate out differently than those which were manufactured in '09. The context of my question was whether you had taken note of whether any '09 manufactured Elite models resulted in cal settings in which the results may not have been as consistent.Calibrate differently how? In what way? Can you provide one example? The calibration process is certainly the same. This observation is just so general I don't know how to respond. Pure is the preferred picture mode on both. Dot-by-dot is the preferred size on both.

I have done quite a few 09 models. They are remarkably consistent. I only did a couple 08 models, and I don't recall any substantial differences beyond what I have already mentioned. The 09s are clearly a better panel.

The biggest difference between 08 and 09 was with the non-Elites.

bodosom
06-28-09, 09:07 PM
Tom, what I was referring to was D-Nice's statement that the 9G Elites manufactured in '08 seem to calibrate out differently than those which were manufactured in '09.

I believe the point is that the are two tendencies in the panels which flip at a certain build date -- probably plus red versus plus green. This is irrelevant to the process of calibration. It does mean you shouldn't take settings from one and copy them to another. Of course this is always true.