Has anybody seen a video or pictures of side by side beam comparison of XHP70.3 Hi R70 and XHP70.3 Hi R9050?
R90 are almost always green. R70 are (at least the bins Simon has) usually not. The rest is just your usual R9050 vs R70 color rendering differences.
If you want a good R9050, grab the 5700K R90 from Simon. Neutral to very slightly green. I have it in a SP33S. I prefer the 4000K R70 in my M21B though.
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This is the one that I am ordering, but in M21E host (I like more throw). XHP70.3 HI R70 4000k seems to be praised by a lot of owners for great color rendering with the least amount of green tint.
Color rendering isn’t great, it is a R70 LED after all. But the beam is pleasant. Outdoors I need no R90, I mainly need efficiency.
Would it mean that 5000K R90 from Simon wouldn’t be as nice as 5700K?
Not the person being asked, but from what I’ve read this seems to be the case.
As a general trend it appears that among R9050 LEDs, the 5700K CCT tends to have higher CRI and better tint than lower CCT counterparts. Examples: the Nichia 219C 5700K occasionally tests at 80 R9, the LH351D 5700K is generally more neutral and I’ve seen one land 97CRI, and similar story with Cree XHP’s.
I can understand why the tint is better: at high CCTs above 5000K, green becomes less noticeable, and the standard reference spectrum becomes a bit green too. I don’t understand the higher CRI though.
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I can say, that every 90 CRI XHP70.3 HI from Simon was green. 5000 K, 5700 K, 6500 K - doesn’t matter. Every was over duv 0.003.
Maybe there are some samples with good duv, but I never got any of them.
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