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.
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!
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.
No comments.
I could meet some fake sellers with “zebralight” name. Somebody register them, and yes seems that they can be blocked by request. There was several accounts with *fire cell set.
I dont believe in ZL owner tint preferences. Nichia leds have another quality level, neverless tint or cri. Leds are always clean, perfectly centered, electrical properties range is very slim. But who wants to deal with them, if they dont provide whosale discount while another company can make unbeatable offer?
What about R12? Only the Oslon Square 3000K 95CRI goes above 80 points in that metric:
Cheers ^:)
Indeed the r12 is better than the 219b r9080 sw40
That ugly green Oslon has nothing on the E21A
Oh man that’s crazy great. Have you had a chance to test anymore? I tried the 6500k and it is stunning. Have a 2000k and 3000/4000 mix in the wings but need a host. These E21As are great.
Optisolis anyone?
wow Optisol
