we build grow lightstrips with the Opti 5k and 2k to get 99+ CRI, im guessing we could shorten up the duv with more 2k
Parameter Value CCT 4615 K
Duv -0.0016 CRI (Ra)(R1~R8) 99 CRI (Re) (R1-R15) 98 CQS 99 TLCI 98 GAI 89
TM-30-15 Rf 98
TM-30-15 Rg 100
We are more interested in replicating sunlight than delta’s but an interesting discussion
cheers
A tint mix will result lower R9, looking at the extreme example for 6500k+2000k you can see a big peak in the red part of the spectrum.
I think that the low R9 you encounter in single LEDs would typically, if not always, be due to a dip in the red part of the spectrum because red light is least efficient to produce.
So you end up with low accuracy of red for both but with caused opposite ways.
Am I right thinking the tint mix would give over saturated reds with more ‘pop’, which some could find more subjectively pleasing despite being less accurate, just like a negative duv?
we build grow lightstrips with the Opti 5k and 2k to get 99+ CRI, im guessing we could shorten up the duv with more 2k
Parameter Value
CCT 4615 K
Duv -0.0016
CRI (Ra)(R1~R8) 99
CRI (Re) (R1-R15) 98
CQS 99
TLCI 98
GAI 89
TM-30-15 Rf 98
TM-30-15 Rg 100
We are more interested in replicating sunlight than delta’s but an interesting discussion
cheers
Cutter Electronics Pty Ltd
Web: https://www.cutter.com.au
How do you replicate sunlight with the opti? Don’t you need UV range in order for plants to grow?
Did you ever happen to find a copy of that spreadsheet?
This might be what you’re looking for
It was asking me to give someone permission and I think I fixed that issue.
Something I’ve been wondering about…
A tint mix will result lower R9, looking at the extreme example for 6500k+2000k you can see a big peak in the red part of the spectrum.
I think that the low R9 you encounter in single LEDs would typically, if not always, be due to a dip in the red part of the spectrum because red light is least efficient to produce.
So you end up with low accuracy of red for both but with caused opposite ways.
Am I right thinking the tint mix would give over saturated reds with more ‘pop’, which some could find more subjectively pleasing despite being less accurate, just like a negative duv?
For me, tint mixing increases Rg, which makes colors more saturated. I prefer the Disney cartoon like colors.
That’s shown on the color vector graphic, nearly all colors are over saturated, including red (hue angle hin 1).
It’s easier to see on a TM-30 report with the chroma shift (saturation) bar graph and color vector graphic :
Great, thanks! No permission issues btw.
Nice, thank you.
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