Brief Description of Calibration Procedures
I am currently only calibrating for 1080p non-UHD/HDR source material (BT709). I have not made a decision WRT which UHD/HDR disk player I will purchase (waiting for impending announcements by Oppo and SONY before committing). This means that my current access to UHD material is primarily streaming (Amazon Prime and Netflix) using the Sony native apps. Streaming HDR content is limited at this time. I do not use a HTPC, so using a computer for calibration test patterns is not an option.
I use the Spears&Munsil ver 2 Blu-ray for all of my calibration test patterns, because of the quality of the material and the ease of disk navigation.
General calibration preparations:
- Completely dark room, of course
- Bias lighting turned off
- All enhancement settings off
- Light sensor off
- Local dimming off
- Color BT709 (or Auto)
- Reality creation off
- Motion controls off
- HDMI Signal format Standard (for non-UHD/HDR)
Summary of test screens:
Target Options (gamma power 2.4)"
1. Contrast - set using S&M contrast test screen.
2. Brightness - really a backlight level control. Adjust by measuring Luminance in CalMAN, and set to the desired luminance level.
3. Black Level - set using S&M brightness test screen.
4. Color & Tint - The S&M test screen will not work properly on this display. I use an alternate procedure: a) Measure Luminance using a 75% White test pattern. b) Multiply the results by .21. c) Display the 75% Red screen and adjust color so it measures at the .21 result. Tint is set using the S&M Tint test screen.
5. Sharpness - set using S&M sharpness test screen.
6. Color Temp - on the CalMAN Mode Settings screen, display a 60% White test pattern and observe the "CCT Avg" score. Select the display color temp that is closest to 6500K.
7. Luminance - on the CalMAN Dynamic Range screen, display a 100% White test pattern and read the "Y Max" score (shown in foot-lamberts in the previous post, but adjustable in the CalMAN Settings).
8. White balance - on the CalMAN 2-point Grayscale screen, alternately display the 30% White and the 80% White test patterns. While displaying the 30% screen, go to the display's Advanced Color Temperature settings and adjust the three bias settings
until the three left bars
are as close to the same height as possible. The DeltaE 2000 should be as low as possible. Then display the 80% White screen and adjust the three gain settings
until the three right bars
are as close to the same height as possible. Again, the DeltaE 2000 should be as low as possible. Repeat the 30% and 80% adjustments until both produce optimized results (they affect each other).
9. Gamma tracking - on the CalMAN Multipoint Grayscale and Gamma screen, follow the instructions to produce the gamma tracking measurement.
10. RGB Balance - on the CalMAN Adjust CMS, follow the instructions to produce the RGB balance measurements.
11. Go back and review each step a second time to make sure one adjustment did not affect the results of another.
12. Save your results. Log any settings changes made on the Display for reference.
- Return display settings to preferred setting (e.g. turn auto-dimming back on). Best PQ results are obtained by minimizing the number of PQ enhancement settings that are turned on (see my Sig for recommended settings).
- Using the settings log you created above, make sure that all the inputs on the display have the same settings. Settings are stored for each HDMI input, as well as for the native TV apps. Nothing can be more confusing than if the PQ changes when you select a different input!