What, no bars or charts to support the data? Don't fear I have it.
So I finally had a chance to calibrate my UN55B7000 Samsung TV. I have read somewhere, I think on CNET.com, that the TV comes already calibrated but when I ran my first reading it was not the case. I used this guide http://www.curtpalme.com/forum/viewt...1aaa96dfa0d025
and eye one calibrator to calibrate the TV.
I am by no mean an expert and did not spent much time researching the information. I just read the guide several times and followed the instructions.
So when I first ran the grayscale measurements these were the readings
The main numbers that we are concerned are the delta E' and the numbers should be below 10 or for the absolute perfect calibration below 3. As you can see the numbers are way off.
Here is the graph for Luminance:
The yellow and white line should be as close as possible. Yellow line represents the average for Red Blue and Green colors. The blue line shows the average luminance.
Here is the RGB graph.
This graph represents the RGB colors. All colors should be as close as possible to 100%. You can see that there is too much blue and not a lot of red. Therefore the Color temperature will be way above 6500K.
Here is the Gamma graph
The gamma should average 2.2 and my TV Gamma was 1.36 (blue line). The white line show where it should be.
Here is the Color Temperature graph
The temperature should be close to 6500K, as you can see my way off on the cooler side.
Here is the CIE Diagram
The color inside the triangle it the NTSC color space. The main idea here is to get as close as possible to D65 point. This diagram will also show how the color space moves after adjusting the secondary colors.
I spent about 5 hours calibrating the TV, mostly because the HCFR Colormeter application was crashing in Windows 7. After it crashed the only way I could start it was to restart the laptop. The crash was happening during continues readings.
So now let's get to the good stuff. After I completed the calibration these were the numbers I got.
Measurements after calibration
As you can see all delta E' numbers except IRE0 are below 10 and some are close to or below 3. On the left side you can see ftL number which for LCD TVs should be between 30 and 40. I adjusted the contrast to bring the ftL to 32.487.
Luminance graph after calibration
I am still not on the reference line, but it looks much better.
RGB graph after calibration
Colors are much closer to 100%
Gamma graph after calibration
Gamma is 2.24 average.
Color Temperature graph after calibration
Color is much closer to 6500K.
CIE Diagram after calibration
As you can see that except IRE0 all the grays scale is very close to D65 point and after the adjusting secondary colors the color space triangle moved. It is represented by the white triangle.
So here are the settings. Please note that I believe that even though the panels come form the same manufacturer the settings may not work for all of them.
Mode - Standard
Blacklight - 4
Contrast - 77
Brightness - 41
Sharpness - 50
Tint - G45/R56
Black Tone - Off
Dynamic Contrast - Off
Gamma - +3
Red Offset - 28
Green Offset - 25
Blue Offset - 28
Red Gain - 50
Green Gain - 21
Blue Gain - 0
Flash Tone - 0
Edge Enhnmnt - Off
For the secondary colors
Color Space - Custom
Red - R90, G3, B0
Green - R20, G36, B10
Blue - R7, G0, B50
Yellow - R16, G34, B11
Cyan - R28, G41, B50
Magenta - R78, G4, B50
Going back to delta E', I notice that if I change the blacklight to 3 the values in delta E' for all gray IRE values except 0 will move below 3. However the ftL number will dip below 30. I wanted to keep the ftL number between 30 and 40 so left the blacklight at 4.