I'm at the point now where I have colour checker average dE of 1.28, max dE of 2.36 for the 24 sample "classic GCD" colour checker, and grayscale av / max dE of 0.61 / 0.87. I've been playing with the calibration on my Sanyo projector and it is all a bit painful to do manually via the CMS and advanced gamma controls. I was more coming at it from the other side the eecolor box looks a bit toy-town to say the least, and on the manufacturer's own website they talk about it in the past tense and seem to be angling themselves as an IP provider as opposed to a box provider which I guess was making me wonder wether it works even as well as a 5x5x5 LUT from a Lumagen (ie is it not the bargain it seems for the ~£200 + shipping these are at the moment). I get what you are saying indeed I guess another way of looking at the 65圆5圆5 LUT is that they are actually offloading some of the work of calculating the intermediate points when applying the LUT to the incoming signal - it must be computationally less intensive to apply a larger LUT.
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