Today I did a large scale test measuring some different types of displays with my i1PRO + SpectraCAL C6 using my C6 profiled from i1PRO.
Several displays of Plasma, LCD, LED are used for this test.
I have started the test using one Plasma as a Reference (Pioneer KURO LX6090H) to profile the C6 using the i1PRO and that saved profiled i used it later to measure another 2 plasma from Panasonic (50VT20) & LG (50PV350). I measured that 2 Plasma's with i1PRO Stand-Alone to check if the profile i have take from KURO is accurate when it used for measuring another brand Plasma displays.
Later i did the same using an LG LCD (37PK450) which i profiled the C6 using the i1PRO again.
I measured Several LCD displays : Sony 32CX520, LG 22LK330, Samsung 40D503, Sony 40HX800, Toshiba 37XV733, with that C6 Saved Profile and with i1PRO standalone also.
At Last i used again a LED Samsung 40D8000 as LED Reference to make a new profile and i have measured agsin several LED's like : LG 55LW650, LG 42LV5500, Sharp 40LE924, Samsung 40C7000. I have measured with i1PRO (standalone) these LED's also to compare the results later.
Before the test, all displays had a 2 hour of warm.
All measurements taked place with both meters mounted onscreen.
For the C6 a Vangard Tripod with C6 Tripod Mount Adapter is used.
Painter's Tape from 3M is used for all displays to both meters to have good contact with the screen.
Before each profile or measurement i took a dark reading for i1PRO.
C6 operated using the factory default 5 Samples value per reading.
i1PRO operated using 5 Samples value with Low Light Trigger Enabled with '1000' Value (To be enabled at all readings).
I used AVSHD Disk with the Same Blu-Ray Player for all the readings.
5 second of delay has applied before each pattern measurement for stability.
I'm posting the results from CalMAN 4.4 Beta i have found:
The xy readings are close, the lumunance differencies had larger difference.
I can say that i can trust a colorimeter profiled from a spectro to do different brand of displays but at CMS there are differencies in Absolute Luminance of the Primary colors (if i had tested the Secondaries also i bet that the difference would be larger there in luminance.) Since the Absolute Luminance is the most important in CMS i can't a trust a profiled colorimeter to do a CMS. Spectro will do a better job there.
Because it was not clearly visible to these luminance charts the differencies in luminance levels, i used photoshop to add the numbers manually.
BTW Profiling maybe will not work from the first try, you need a lot of checks to confirm that it's co close to the reference you used. In this test i didn't had enough time to do a more accurate profilling. I tryed 2-3 to each display type and i saved the most closer to the reference. A lot of details are critical, Position of the meter, time of each pattern displayed at screen must be equal for plasma displays to prevent the temporal burn-in, some displays are using something like dimming the image after some time of displaying the same pattern , and a lot of other problems.
If anyone needs that CalMAN Saved Measurement file i can send to him with PM.Plasma Displays:LCD Displays:LED Displays: