High CRI leds, comparing R9 values, XP-G3 N219c N218b XM-L2 XP-L2

I agree. I prefer the tint of my N219b over the others.
4000k N219b 9050 Lumintop Tool:

and sw45 9080:

My 4000k N219b 9080, and 9050, are less pink than my 4500k N219b 9080

I agree, the tint charts and my experience confirm that.

sw45 9080 from Clemence

Kitchen window overcast daylight 7pm in California, iPhone 8

sw 40 9050 from Illumn

No.
90CRI XP-G3 have much bigger R9 rate than most 70-80 CRI cree leds. But they look much more yellow/greener than xp-g2 3d for example.

Jon,

Id like to offer you another data point. Here is an LED I swapped into a Preon P1 (Run on high). Oslon 3000k 95 CRI. To my eyes this has both too much yellow and a tiny bit too much green. This LED will fit anywhere you have a Nichia 219X

Also the only cool white LED id consider, the Nichia E21A 6500k R9080

The first two images, at differing levels, show a (TIR) PT16 with 3 Nichia 219b sw45 9080 emitters from Clemence on the left vs. 6 Nichia 219b sw45 9050 (92+ CRI) in an Eagtac MX253LC reflector light.

The third photo (at lower output) has an Eagtac D25 AAA with the same small die Nichia 219b sw45 9050 emitter, this time using a TIR.
The differences in CRI, R9, and location relative to the BBL are major variables.
All photos were daylight balanced.

I agree with you, but you do not seem to have understood yet, that I am not talking about the Low CRI LEDs you are mentioning. The title of this thread is specific:
High CRI leds, comparing R9 values, XP-G3 N219c N218b XM-L2 XP-L”
Im specifically comparing these 10 high CRI LEDs:

these next 4 are the 219c from Clemence in 2700k, 3000k, 3500k, 4000k

That is awesome that you have the software to compare CRI. I look forward to learning more from you posts.
I agree that sample Oslon has very high R9 and appreciate your comment that it has Yellow/Green Tint. I feel the same way about the 3000k N219c I posted, even though it falls very close to the BBL it lands slightly above. Also true for the 4000k N219b in the Tools that I posted… High in R9 but more Yellow than Rosy Tint, and the Tint chart confirms they land slightly above the BBL
Do you also have the ability to chart the Tint of LEDs you test, showing where they land relative to the BBL?

Thanks! I really appreciate your photos comparing specific High CRI LEDs that I included in the 10 I am comparing. I get similar results with my sw45 9080 compared to my sw40 9050.
And I agree completely that CRI is a separate varible from Tint relative to the BBL, and CCT is also a separate variable.

All emitters are from Clemence
All are in PT16s except for the sm303 in a D4 quad
PT 16s set to medium, the D4 at default ~145 lumens
Left to right
219b sw45 9080
219b sw40 9050
219c sm403 9050
219c sm 303 9050
*The sm 303 was affected by the daylight balance setting used.


This time, PTs on High, D4 also ~~800 lumens
Upper left – 219b sw45 9080
Lower left – 219b sw40 9050
Upper right – 219c sm403 9050
Lower right – 219c sm 303 9050


The only ~Hi CRI Cree(n) available to me here in Brazil to compare the 219c sm303 with, is the 80+ cri 3000k. XPL – HI sold by RMM.
Here are two attempts, trying to persuade two different cell phones to take care of a comparison.

Here’s a tint comparison I did in the past featuring many high-cri high-R9 LEDs.

Thanks fort the beamshots

by any chance does anyone reading this have software that can produce Tint and Spectrum charts like this?:

images originally from maukka:

I find those really informative, and far better than any beamshot I can produce

If you have an instrument that spits out the CIE xy coordinates (practically any colorimeter or spectro), you can just plot them in a spreadsheet program such as Excel with a suitable background image positioned accordingly to represent the BBL. Other option is to use Osram ColorCalculator. But a CCT and duv value will represent the same data in text form just fine.

The colorful spectrum is from hcfr (which also can do the tint plotting)

Thank You for the help maukka!

I got the Osram Color Calculator installed successfully

Ive got some studying to do.
Learned hcfr is incompatible w Macintosh.

btw, I bought the S1 Mini High CRI, after reading your review, so I was not shocked to see the green tint.
It is a birthday present from my daughter, a non flashaholic.
When I turned on my present, the first words out of her mouth were
It’s green.

I laughed and replied, yes, I expected that.
Thank You for my
Green Lantern!:slight_smile:

maukka Im grateful to you for helping me maintain my sense of humor about Tint.
Instead of feeling Angry at Green, the 0Light Tint is a source of Comic Relief for me.
I think its funny that I’m such a snob.

PWM list causes inanity:
“Why is this list allowed to remain on CPF? It may be negatively impacting flashlight sales”

……even Nichia can provide lottery opportunties, with their stated ‘R9 margin for error’ of 6.5% in the data sheet I checked, giving them ample ‘wiggle room’ when their feet are held to the fire.
Not to throw the ‘baby out with the bathwater’, R9 may be a good starting point, but as can be seen from the newer Hi Cri offerings coming from Nichia, and tests in other BLF threads by our impartial mavens, the writing is on the wall, marketing is lumen driven.
219a, 219b, 219c, 219d, and now the new generation taking over, R.R.I.P.
Sadly, Nichia is becoming better at producing the highest R9 emitters, while freeing themselves from their trademark Rosey legacy. Those of us with vision issues, and others who need color contrast in addition to brightness contrast, can be heard lamenting.

Yuji and Nichia mix their own phosphors, giving them a leg-up over most competition. Their specialization in humancentric lighting shows they care more, but not all that much when it comes to flashaholism.

Jon,

Using HCFR I was able to plot the tint of the Osram Square

thanks, super helpful!
great Tint plots, E21 6500k tint looks really close to BBL
related: djoz put an E21 2200k version in an S Mini Copper

yes, I can see how the Osram Square would look yellow, since I have a 3000k N219c that I consider yellow, and it sits even closer to the BBL. Also have N219c 4000k, that I find rather green.

After reading the Wiki Digested info cited, and since the subject of this thread has to do with R9, it could be constructive to point out, (AFAIK) R9 is not one of the parameters used in CRI calculations.
For this reason, it is needed for evaluation.

From myledy.com
Color Rendering Index (CRI) and R9, are two vital elements to consider when choosing LED or necessary interior items…….For us to define the term R9, it is first important to understand what the Color Rendering Index is. Color Rendering Index is a rating system that measures the precision of how well a light source generates the color of an illuminated object. It gauges the light source’s capacity to display object colors “sensibly” or “normally” compared to a conversant reference source, either daylight or incandescent light. Color Rendering Index is an average value based on R1 to R8. R9 is one of the six saturated test colors not utilized in calculating CRI.
Since some percentage of the color Red can be found mixed into the various tints of most processed colors, the ability to precisely reproduce Red is key for accurately rendering colors of displayed objects. Lamps with high R9 values create the most vivid colors.
The Color Rendering Index metric is divided into 14 color ranges from R1 to R14. Color Rendition Index is an average value based on color ranges R1 to R8 of the metric, however, doesn’t consider the remaining six extra color references. A high CRI, matched with a high R9 value yields the most precise display of color

George Yo (Mr. Zebralight), has said (in posts included in other forums) he reserved the ‘n’ for inclusion as a suffix for his model numbers long ago, but was unhappy with Nichia’s previous method of binning either above, or below the ANSI BBL, instead of centered on it.

George has however, stated his personal dislike for the trademark Nichia rose hue, to nobody’s surprise.

Curious to imagine, with ZL’s previous use of Rebel emitters, anybody is going to get in a twit over sharing a miniscule slice of sales enough to compromise a business relationship (maybe a fact of life in Russia?).

Thank You!
I did not know those details. It explains how Yellow/Green tinted Zebras qualify as High CRI while still having rather Low R9.

High R9 for the Win!

Photo from official zebralight ebay selling page.

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