Quote:
Originally Posted by nand chan
I assume a “professional calibrator” will have access to professional-grade equipment, like $5000 spectrophotometers. 
Yes, which ones did you paste? Paste them here.
Works fine here, even brilliantly so.
1/1/1 in 6500K is equal to 1.0001484002173517 / 0.999984246706869 / 0.99971868953766008 at 6504K.
That is, at 16-bit scales, 65544.7254082441436595 / 65533.967607934659915 / 65516.5643188505533428, a difference of 1-20. Regardless of whether or not you can see it, it's a notable enough margin when calibrating a 16-bit gamma curve. |
Primaries:
red, Yxy, 5.112, 0.628, 0.337
green, Yxy, 9.018, 0.294, 0.595
blue, Yxy, 1.672, 0.156, 0.078
white, Yxy, 10.833, 0.321, 0.342
Greyscale:
20, Yxy, 0.301, 0.338, 0.349
30, Yxy, 1.179, 0.316, 0.333
40, Yxy, 2.705, 0.311, 0.335
50, Yxy, 5.037, 0.311, 0.340
60, Yxy, 7.476, 0.315, 0.340
70, Yxy, 10.364, 0.320, 0.341
80, Yxy, 10.603, 0.320, 0.341
90, Yxy, 10.749, 0.321, 0.342
100, Yxy, 10.850, 0.321, 0.342
Quote:
Originally Posted by Asmodian
But its error is larger than +-4K at 6500K, it isn't a super accurate sensor. Sensors that are that accurate are very expensive. I am pretty sure the Eye One isn't. I am sure the HCFR is great for video watching and normal use but you don't need to worry about (and cannot differentiate) the difference between D65 and 6500K.  |
It was about A$5k. He is a professional calibrator, one of two in Australia (both my mates).
Greytag Macbeth Eye One Pro or somesuch, I forget the exact name. The one you have to take black readings with constantly - it has a little shutter you close to do that.