Calibrating and Profiling Using Eye One Display

The Eye-One Display 2 package from X-Rite ([52]) includes the Eye-One Match software for calibrating and profiling monitors, as well as a sensor (colorimeter). It supports Mac and Windows and allows you to calibrate CRTs as well as LCDs and notebook displays. These are the necessary steps for calibrating your monitor:

1. Launch Eye-One Match (EOM) and select the monitor from the list of devices you can profile. We recommend using Advanced mode.

> A luminance of 120-140 cd/m2 may imply that you have to turn your monitor brightness down to about 15% of maximum. This is perfectly acceptable and also helps to prevent eye fatigue. If you work in prepress and your profile kit allows, use a white point between 5600 and 6000 Kelvin as recommended by the Swiss UGRA: http://www.ugra .c h

Figure 3-17:

The Eye-One Match startup screen

2. Select the type of monitor you intend to calibrate (CRT, LCD, or notebook), then Click to continue.

3. The first task is to calibrate the sensor (not your monitor). Follow the instructions given on the screen. (Help also provides additional information.)

Figure 3-17:

The Eye-One Match startup screen

Figure 3-18: Recommended monitor calibration settings

Figure 3-18: Recommended monitor calibration settings

Figure 3-20: Use your monitor's controls to position the contrast marker near zero.
Figure 3-21: If your monitor has RGB controls, use them to set your target white point.
Figure 3-22: Set luminance to a target value of 120-140 cd/m2 using the monitor brightness control.

4. Select your target calibration settings. We recommend the values shown in figure 3-18. Click Jfci to proceed to the next step.

5. Attach the sensor to your monitor using either the suction-cup (if calibrating a CRT) or by attaching the lead weights provided to the sensor cable and letting them dangle at the rear of your monitor. If you are calibrating an LCD, you may have to tilt the monitor back to ensure that the sensor lies flat on the screen. Figure 3-19: Eye-One Display 2 colorimeter

6. Begin calibration using the your monitor's controls (if available). Skip this step if you are calibrating a notebook or LCD without controls and continue with step 9.

Set contrast to maximum and then slowly reduce it until the indicator lies within the green area and close to 0. The software will guide you through these steps.

If possible, place your on-screen display (OSD) menu off-center so that it doesn't interfere with the Eye-One Match window.

7. Press Start to begin measuring contrast, then Stop and to begin calibrating the RGB controls. This step will set the control dials so that the monitor's white point is close to the intended color temperature (6500 K or 5000 K).

You can set your monitor's white point to 6500 K by using the onscreen displays or the monitor's RGB controls (if available). All three colored bars should lie within the green area for optimum calibration. The Eye-One Match window provides useful visual feedback during the process (figure 3-21).

If you are using the monitor's three RGB controls to adjust the white point, and if setting one of the individual color sliders to maximum still doesn't produce satisfactory results, you can reduce the values of the other two sliders to help get the color balance right.

8. Next, set luminance using your monitor's brightness controls. A luminance of 100-140 cd/m2 is recommended for LCD monitors. If you are calibrating a notebook display, you may have to reduce the value to 100-120 cd/m2. You will probably also have to select 100 cd/m2 for dimmer CRT monitors.

9. Calibration is now complete. Eye-One Match will start the actual characterization, displaying a number of color patches and measuring their values. This process lasts about 10 minutes and requires no user input.

10. Once characterization is finished, Eye-One Match will display the values used and a diagram of the resulting color space (figure 3-23).

Figure 3-23:

The monitor profiling values and color space display. Give your profile an appropriate name.

The software will prompt you for a profile name. Choose a name that reflects the tool used, the brand of monitor, and the calibration values. For example, if you are using EOM to calibrate an NEC 2180 monitor with determined values, your profile could be called "EOM-NEC2180-D65-G2.2.". You may also want to include the date.

Eye-One Match will save the ICC profile to an appropriate folder and will immediately make it the default monitor profile. If you have Adobe Gamma installed in Windows, you should move Adobe Gamma from the startup folder to keep it from interfering with the new monitor profile when Windows starts up.

Once you have completed these profiling steps, do not change any monitor settings without re-calibrating. We recommend that you re-calibrate and re-profile LCD monitors about every four weeks. If you are using a CRT monitor, every second week is preferable.

Figure 3-23:

The monitor profiling values and color space display. Give your profile an appropriate name.

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