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The Secrets Blu-ray Player HDMI Benchmark - Part 2

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The Tests

While many people do hire a certified calibrator to come and setup their display, far more people rely on the many DIY options that are available now. For almost all of these, your Blu-ray player is the source used as it's cheap, or free, to acquire a calibration disc for one compared to buying a dedicated signal generator, or hiring someone to come out. However, if your Blu-ray players output is incorrect, how would this affect your actual calibration? To test that we used the following equipment:

  • A Lumagen Radiance Mini3D Video Processor
  • A Blu-ray player with correct output, we will call it Player A
  • A Blu-ray player with incorrect output, we will call it Player B
  • A calibrated i1 Display2 colorimeter
  • ChromaPure version 2.2 Software
  • The AVS Rec. 709 Calibration Disc
  • A Samsung PN50B650 Plasma Display

We wanted to examine this two ways: Using an incorrect source on a correctly calibrated display, and using an incorrect source to calibrate a display. The methodology for Test 1 was as follows:

  • Reset an HDMI Input on the display to factory settings
  • Let the display and colorimeter warm-up
  • Use ChromaPure with the Lumagen Radiance to perform an automatic calibration
  • Record the measurements of the display using the Lumagens internal pattern generator
  • Record the measurements of the display using the Rec. 709 Calibration Disc and both Player A and Player B

We made sure that both players were at factory settings, using 4:2:2 YCbCr output at 1080p60 over HDMI. 24p mode was disabled on the players as well as the display (24p mode can cause a change in black levels on many displays), and both players used the same HDMI cable into HDMI Input 1 on the Lumagen Radiance. This should ensure that the results are fair and only affected by the performance of the Blu-ray players themselves.

For Test 2, the methodology was:

  • Reset an HDMI Input on the display to factory settings
  • Let the display and colorimeter warm-up
  • Using the Player B and the Rec. 709 Calibration Disc, calibrate the display using its internal CMS and ChromaPure
  • Record the measurements of the display using ChromaPure
  • Using the pattern generator of the Lumagen Radiance on this newly calibrated input, record measurements in ChromaPure from the display

The same precautions were used as above, with the same HDMI cable for both, and nothing else in the signal path. If Player B really is not causing any real world issues, than we would expect the calibration results to be identical.