Originally Posted by WTS
Actually my main concerns would be doing just the greyscales, as the newer Sony TVs have pretty good colour setup right of the box from what I've seen and read. I think you're trying to talk me into buying a i1display pro to go with my i1pro, ha-ha. I just have a hard time believing that calibrating a colourimeter like the i1display pro only at one point - 100%(in the profiling) white is going to make the low end at 20% greyscale accurate as well. If that's the case they must have some pretty damn good/accurate/linear light sensors in them to linearize with only one calibration point. I've designed a number of instruments in my life and rarely have I seen anything require only a one point calibration to be accurate across it's whole range. Only one comes to mind that would be a load cell. Prove me wrong or explain to me how this is possible.
It happens the 4-color matrix method to be used by Minolta/Colorimetry Research/Klein Instruments, all these are professional colorimeter companies with models from 6K$ - 30K$, its industry standard that method of FCMM, its not something experimental, its been used for +20 years already as a way to correct a colorimeter.
Its approved method by NIST (National Institute of Standards and Technology) for that reason the whole industry is using it.
LightSpace came up to improve that method before 2 months, you can have better results using Volumetric Probe method, when you will use a reference spectro, but this is not undo or make not applicable the 4-color matrix method the industry is using as default method.
So Volumetric Probe method will improve the people who perform volumetric calibrations, measure 5000-1000 different color points, with a 'corrected' colorimeter.
When you will perform just a grayscale calibration, there no such problems using 4-color matrix method.
Do you see the table of that post from FSI
From the left side which has red stroke is the FCMM measurements, CR-100 is the colorimeter and CR-250 is the spectro.
The numbers I have highlight with blue 10% background fill are all grayscale readings, as you can see to the deviations of xy, with grayscale there no such high improvements.
Originally Posted by WTS
I will say that using the i1pro down in the low end did take some tweaking back and forth to get the blacks correct by eye. But they did look good when I was done with both the 60" and my VW95 projector.
'Eye' calibration and such magician methods (are you calculating Luminance levels to track the gamma with your eyes also?) goes the conversation to another level.