Calibrate Projector Color - Barco F50 User Manual

10. Color calibration

10.6 Calibrate projector color

Necessary tools
• Calibrated Chroma Meter
• Tripod
About
All monitors and displays change over time. Correctly calibrating your projector balances the brightness levels in all three colors
(RGB) and establishes the correct white point (D65) which in turn yields a more balanced and controlled level of brightness in your
imagery.
The internal temperature of the projector can affect calibration. For best results, allow the projector to warm
up for at least 10 minutes before starting the color calibration process.
Procedure
1. Turn off Color Correction. Main menu — Picture — RealColor — Color Correction
2. Select the desired BrilliantColor setting : off / color / bright / SRP half / SRP full. Main menu — Picture — RealColor — Brilliant-
Color
3. Activate the RealColor test image. Main Menu — Picture — RealColor — RealColor Calibration — Color Calibration Test Image
4. Position the Chroma or Spectro meter to map the center of the image.
5. Use the arrow keys to page through the White, Red, Green & Blue test images. Record the X,Y and luminance values for each
image. Where necessary, round up the last digit so that there are only 3 digits past the decimal point, e.g. 0.605 instead of 0.6049
6. Input the measured values into the RealColor calibration menu: Main Menu — Picture — RealColor Calibration — Measured
Values
Note: The luminance value of White (B) acts as the normalizer. To calculate the normalized luminance values (V) for each of
the other colors (A), divide each individual luminance value by the white luminance.
For example: If the luminance value of White (B) is measured as 794, and the Red luminance value (A) is 205, then the
normalized value of Red will be 0.26L (205L/794L=0.26L).
7. Adjust the desired values Main Menu — Picture — RealColor Calibration — Desired Values until the color display meets your
requirements.
8. Select Main Menu — Picture — RealColor — Reset to native to set the projector's color system to match the current measured
values input.
Verify the calibration
1. Go to Main Menu — Picture — RealColor and select RealColor mode Coordinate x,y
2. Set up a full white test image and measure the coordinates (x,y).
3. Depending on the accuracy of the Chroma Meter used, the measured coordinates should be close to the following values:
- x = 0.312
- y = 0.329
4. If the measured coordinates are not within the tolerance range, do the following:
- Check that the values input in the OSD are correct
- Perform the calibration procedure again (see "Color calibration best practice", page 93)
Note: The calibration tolerance margin will change depending on the type of color wheel installed.
94 601–0307–00 F50 25/02/2016