Step by step calibration of my LCD with Eye One Display 2

Graeme,

Thanks for sharing that. I've certainly learnt from it. I knew the recommendations but never understood why.

Now all I've got to do it remember it, which at my age is not as simple as you might expect!

BluewookieJim wrote in post #7165029
While I am it it, in the drop down menus of the eyeMatch software, there is one section where you can choose between small (matrix) and large (LUT), and also version 2 vs version 4 of something. Any advice about that?

Matrix profile is smaller, LUT is more precise (AFAIK).
v2. vs. v4 is the ICC standard. Not aware of differences there. (If anyone knows, I'm interested!)

I know that LR supposedly does a (kind of?) perceptual rendering for screen if the monitor profile is a LUT v4. (either/or?) profile.

That might give a difference between PS and LR.
I've never understood why LR would behave that way, but I do know that it's not behaviour I want. So I've set my calibration softeware to create a v2. matrix profile.

(Actually, one of the things on my "to do" list, is to try and see what happens when I use a v4. LUT profile)

D.C. wrote in post #7027360
Prints are a little darker that monitor, [...]

I always find this to be the case. When I send an image to the lab, the monitor-to-print color is nearly perfect, while shadows (for example) appear darker in the print than on my monitor. AFAIK, this is due to light passing through the image on the screen, vs. light reflecting off the printed image.

gcogger wrote in post #7168711
I have to agree with that, and add that it's best not to adjust the contrast either - just set it to the factory default (80 on the L2475W, I believe). The only thing you should adjust is brightness, which generally controls the backlight. Leave the RGB values on 100. I know it sounds weird, but read on...

That is interesting advice, I'll certainly have to give it a try tonight or this weekend.

I did another calibration last night. On the display, I choose 6500K for the color, rather than the custom. Final brightness and contrast values were 21 and 100.

In the EyeMatch software, I choose native white point, 2.2 gamma, and 110 luminance. I did the contrast/brightness according to the measurements. The final analysis showed color temperature at 5800K, luminance and gamma were spot on.

The results were certainly better than my previous few calibrations.

Anyway, if I'm following your suggestions correctly, I should set the contrast to 80, set all the color sliders to 255 (all the way up) on the custom color OSD menu, and then calibrate using native white point?

Jim,

On my monitor theres a menu option to return all the settings to Samsungs defaults. I use before every calibration following GretaMcBeths advise.

This is all very interesting. I just went back and calibrated to luminance 110, 6500K, and 2.2 gamma. Raised the RGB back to 100%. I hit all the targets with contrast 100 and brightness at 9. It seems a little dim now, but will leave it for a few days to get used to it. I did read the RGB. The red was a little high, green right on, and blue a little low. It read the white balance at 5700K, but at the end gave it at current of 6500K, current gamma of 2.2 and luminance of 110.6? Eye-0ne display 2 and Hp LP2475W.

Thanks to all the interesting reading here I may be learning something.

The pictures I have PP'ed before look good at these levels. The white around the edges of this web sight seem a little gray now. But I will look at it for a while. My eyes may be just used to it being so bright.

gcogger wrote in post #7168711
I have to agree with that, and add that it's best not to adjust the contrast either - just set it to the factory default (80 on the L2475W, I believe). The only thing you should adjust is brightness, which generally controls the backlight. Leave the RGB values on 100. I know it sounds weird, but read on...

I tried this last night. I used Native White Point, 110 Luminance, 2.2 Gamma as my calibration settings.

Before I started the calibration, I set the contrast to 80, RGB to custom, all 3 sliders at 255.

I'm still not sure why i would leave the contrast at 80, rather than setting it at 100 as the EyeMatch application recommends, maybe you can explain that.

Anyway, after the first time through the calibration, the luminance was around 127, so I went through it a second time. I believe my final brightness setting was either 8 or 9. After the second pass I was almost spot on with the luminance (110.6) gamma was at 2.2, color temperature was 6200K.

Jim,

I believe you might find 6200 too "warm". if you do, just up the colour temp. I use 6500 and still think I ought to raise it a little, just to cool it slightly.

Oh, I think it's pretty hard to spot 300K difference. 6200 should be ok.

Lowner wrote in post #7200056
Jim,

I believe you might find 6200 too "warm". if you do, just up the colour temp. I use 6500 and still think I ought to raise it a little, just to cool it slightly.

In terms of calibrating with EyeMatch, how would I go about raising the color temperature, since I'm calibrationg to "native white point" on my HP LP2475w, whatever that may be.

For what it's worth, I also calibrated my secondary display, a BenQ TN panel to native white point, 110 luminance. It ended up with a color temp of 6900. I still haven't decided if I will keep this as my secondary display, or switch to my Dell FP1905, which I can rotate into portrait view. I haven't tried calibrating that display with the i1d2 yet.

Damo,

Given that I believe 6500 is a touch warm, what sort of increase do you think might be suitable. Don't overdo it, I'm trying to fine tune here!

Jim,

Your choice of Native White Point is one choice, but it can be set to pretty well any colour temperature you wish by using Custom White Point.

Lowner wrote in post #7200333
Damo,

Given that I believe 6500 is a touch warm, what sort of increase do you think might be suitable. Don't overdo it, I'm trying to fine tune here!

Wow, really? I've never heard of anyone considering 6500 too warm before. How cool is your ambient lighting???

Damo,

It's hopeless, don't even ask. I've tried an expensive lamp which was a complete disaster and I'm now using an energy saving thing, hardly correct I know.

Thinking about it right now, in Explorer which is not colour managed, I need to have the monitor set differently in IE, and leave Photoshop alone. Not sure thats possible!

BluewookieJim wrote in post #7200002
I tried this last night. I used Native White Point, 110 Luminance, 2.2 Gamma as my calibration settings.

Before I started the calibration, I set the contrast to 80, RGB to custom, all 3 sliders at 255.

I'm still not sure why i would leave the contrast at 80, rather than setting it at 100 as the EyeMatch application recommends, maybe you can explain that.

That's what you get if you set the contrast to the factory default, which probably means that a contrast setting of 80 makes no adjustment to the RGB values. Probably I should really do some more testing, but I don't have the time at the moment! At 80, I regard the smoothness of gradients as 'very good', only showing any detectable 'steps' at very specific colours and 100% saturation.

BluewookieJim wrote in post #7200002
Anyway, after the first time through the calibration, the luminance was around 127, so I went through it a second time. I believe my final brightness setting was either 8 or 9. After the second pass I was almost spot on with the luminance (110.6) gamma was at 2.2, color temperature was 6200K.

One of the reasons I wanted this monitor is that it maintains very good contrast ratio at very low luminence settings. I'd like to get the luminence down to around 85-90 to help with matching prints that are viewed under 'normal' indoor lighting. I simply set the brightness to 0 and ended up at around 95 cd/m2 and a native white point of 6000K. That's fine by me The main reason that 6500K ended up as the recommended white point for calibration is that most monitors could not go much lower without some fairly extreme adjustments. Prints are generally viewed under much warmer colour temperatures than 6500K, so I'm not going to worry about going lower if the monitor is happy...

My biggest problem with the calibration of my 275T is that once I set RGB, then my contrast is off, and sometimes the contrast does not get to the green, I have to skip forward and adjust the RGB (somewhere in the 17-20 range for each color) then come back and push contrast up high.

What does this mean? And is this wrong?