Is it a good idea to buy a Yuji Sunwave 6500K lightbulb…

[Guillaume]

OK thank you, I’ll stay tuned.

[Vincent]

Black ambient light cover, red no ambient light cover, both ambient light measurements

Black ambient light cover ambient light measurement, red no ambient light cover, emissive measurement

So I’d say that if I loose my ambient light cover, my i1Pro2 measurements will be moved slighty to te blue side if I tries to use emission to evaluate “light color” (xy and SPD, lux values will be wrong, but I could use a colorimeter for that). I think that this stuff  is locked to  firmware data so maybe data is far from portable between i1Pros, but maybe adding -4b* to your emissive measurement while measuring that Sunwave 6500K gives you a more realistic value.
But as said before, maybe this stuff is not portable at all between i1Pro2s

• This reply was modified 9 months, 3 weeks ago by Vincent.

[Roger Breton]

Guillaume,

Did you buy the lamp direct from Yuji?

[Guillaume]

@Vincent : Thank you ! That was my own theory but it needed to be validated. So the lightbulbs hit a warmer CCT. If it doesn’t bother you, can you give me the xy values please ?

@Roger Breton : As I’m in Europe there wasn’t any alternatives so yes.

• This reply was modified 9 months, 3 weeks ago by Guillaume.

[Vincent]

Mostly in “x”

[Guillaume]

Thank you ! 😀

[Guillaume]

@Vincent : Is the Yuji Sunlight D65 lightbulb a good reference to calibrate a monitor ?

[Vincent]

Is it close to D65 xy?

[Guillaume]

IDK, but is it possible that emissive measurements are more accurate than ambiant light one ?

[Vincent]

If device is out of certification and you do not even have the ambient light to test… it’s guessing. xy offset may not be the same as mine.
Also as pointed on previous messages “D”-simulators fron Yuji are on another market segment than your product, so I won’t bet it will match D65 xy CIE 1931 2deg, although it should be close as your D65 xy coord on display direct messuremnet.

[Author]

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