Originally Posted by Jeroen1000
I should refresh what is considered small again by using Tom's Excel sheets. I thought 0,000x was considered small whereas +0.002 is considered significant enough to investigate.
But since I'm not sure I'm not going to argue:D
Tom's sheet did the math for me and the "pattern error" is 0.3 dE for cyan. I guess that is not as significant as I assumed but it is something:-). This because all other colours agree perfectly within a margin of 0.001
Your Cyan between the 2 readings has about 1.1 dE2000 difference, this is something you can easily see to your screen with your eyes, if you pause your blueray with AVSHD disk Cyan Pattern and then generate the pattern from the DUO.
To calculate accurately the dE, we need the Y (Luminance) also.
Also, you have measured only one Cyan or Green Color Point from the total nearly 24.000 possible shades of Green/Cyan, this means that if you have 1.1dE only at that color points then you will propably have the same 1.1dE to some thousant color points also.....this makes the difference bigger that you thought.
Better run a 10-Point Saturation/Luminance to have a better view.
The measurements that are counts are these you are taking from your bluray as a source, since this will be your player during the bluray movie playback, for me, i don't really care what a pattern generator will tell me.... If you compare 5 difference pattern generator, you will get different reading too.
The point is to get you Actual Player closer to the Blu-Ray Movie Mastered Specs (REC.709).....don't pay attention to the pattern generator...... Using your player as a source you will fix with the correction your player inaccuracies also, because any player has different output.
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