Colour results from a Sony PVM-2541 TriMaster OLED monitor

//Colour results from a Sony PVM-2541 TriMaster OLED monitor

Colour results from a Sony PVM-2541 TriMaster OLED monitor

Having spent a bit more time with the Klein KT10-A probe I profiled the Sony monitor we hired to practice on.

Here you can see the colour gamut for the displayed compared to the Rec709 colour space for television. I used the Klein “K Colorimeter” Windows software to make these measurements. Their ChromaSurf software, which although excellent and available for OS-X, Linux & Windows, doesn’t do automated testing for profiling displays.
It is an excellent match with the green extremity being a tiny bit mis-matched. I would not expect to see this from either a CRT or LCD monitor.

The white curved line is the “black body locus” and is where physicists define the colour of white.


1. Gamut measurements

White Field
Video  x    y    Y
255  .313 .336   136.45

Red Field
Video  x    y    Y
255  .639 .332    28.35

Green Field
Video  x    y    Y
255  .296 .603    99.75

Blue Field
Video  x    y    Y
255  .149 .060     9.47

EBU Overlap Gamut:  98.4%

2. Gamma measurements

White Field
Video  x    y      Y
235  .313 .334   110.99
207  .313 .334    83.10
180  .314 .336    58.14
153  .315 .337    37.74
125  .317 .338    22.35
97  .319 .341    11.39
70  .324 .347     3.50
43  —- —-     0.39
16  —- —-     0.01

 

Red Field
Video  x    y      Y
235  .640 .332    24.30
207  .641 .332    17.79
180  .642 .332    12.87
153  .645 .332     7.72
125  .651 .333     4.20
97  .664 .332     1.88
70  .671 .325     0.65
43  —- —-     0.09
16  —- —-     0.01

 

Green Field

Video  x    y      Y
235  .296 .603    81.12
207  .297 .603    57.73
180  .297 .604    39.60
153  .297 .604    25.74
125  .297 .608    14.55
97  .297 .614     6.97
70  .296 .638     2.27
43  —- —-     0.26
16  —- —-     0.01

Blue Field
Video  x    y      Y
235  .149 .060     8.19
207  .149 .059     5.73
180  .149 .059     3.89
153  .148 .058     2.39
125  .147 .056     1.29
97  .143 .053     0.54
70  —- —-     0.18
43  —- —-     0.02
16  —- —-     0.01

You can see that the colour of white through grey tracks very well until you get to within 15% of black; you can generally accurately read the luminance level down to sub 1Cd/m2 but colour measurements become too noisy down there. The KT10-A seems to perform better than our DK PM5639 in this respect.

By |2016-10-29T08:55:04+00:00May 6th, 2014|Categories: Broadcast Engineering|Tags: , |0 Comments

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