At least ;).
You mean the TrustFire L1? Scroll down to the last posting and … read 
Ya know ya got a knack fer gettin me to buy things ya like. I like the looks of this mainly cuz of the button.
Just to humor me before I spring out the $$$$ cood ya give me a TCR on it? :laughing: :laughing: :laughing: :laughing: 
Same LED in the Minis and the L1. You gave it a 5, I’ll give it a CRI 75 and an angry blue.
Watt? C’mon man don’t give me a Rommel Panzer retreat from a Patton deal here. :laughing:
TCR it for me.
Take the most familiar object you likely know typically in yer right hand; go out in the sunlight prolly tomorrow if today is too late. Note the colors. Then compare them to the flash rendition.
Do the pinks and purples for example compare favorably/unfavorably? That’s the TCR rating.
7.5
What a coincidence that it’s CRI 75!
Seriously, after my eyes did their balancing trick, the colors look ok. Like CRI 75 TCR 7.5
It’s still angry blue in the center (8000K+), has a yellow corona just below 5000K and spill around 6000K. Your TCR won’t tell you this.
No butt the TCR succinctly and quickly did without going into your other details.
I now know that this flash with a TCR 7.5 prolly ain’t gonna cut it for me. Butt your’s is just one TCR opinion. I’d like to hear others. Consensus is better. Cuz ya know every flash is different.
Ok. Maybe I’ll get it anyway cuz yer German and Blaupunkt is proof that specs don’t mean everything. :laughing:
PS. Same thing goes for Pukas, ooops I mean Lucas.
Don’t. It’s got exactly the same LED/optics like your Mini2 has. You gain nothing except that button and AAA compatibility.
But if you know how to mod it to a shaved SST-20, you’ll give it a 10.
Well ya know how much I like the Mini2’s general construction - that spectacular spill particularly.
Can ya change the optics? Maybe one with a built-in higher CRI? :laughing: :+1: 
All it takes is a 10mm MCPCB w/ SST-20, and you need to extend the wires some mm. The shaved LED fits under the optics.
Beautiful. Thanx. :+1:
You’re welcome. Enjoy modding.
tint perception changes when the reference white balance changes
the blue and pink beams on the right side of the photos,
are from the exact same light, at different times of day
I give the sw45k a subjective personal preference score (TCR) of 10 during the day and 3 at night.
.
I have learned that the sw45k has a very high R9 CRI score, so I seek LEDs with similarly high R9 CRI scores (the red bar in the next images). The SST-20 also has high R9 CRI (above 80).
The sw45k has a very negative DUV score –0.0055.
I perceive this as Pink Tint, mainly when using daylight white as the reference
The SST-20 scores positive DUV of 0.0034, which to my eye is rather greenish, especially when observed from an incandescent white balance as a reference. I am not a fan of that LED’s Tint, despite the high R9 CRI spec…
I give the SST-20 4000k a subjective personal preference score (TCR) of 5 during the day and 0 at night.
Actually, it has a slight positive Duv, ie, is slightly greenish.
I wish it were that easy.
I got 3 thermometers (clock/thermometer, clock/thermometer/hygrometer, thermometer/hygrometer), and despite being within inches of each other, always have a consistent 5°F spread.
So I have no idea other than relatively what the true temperature is.
Bought a “precision” glass candy thermometer (long-ass ones at least 1’ long), tried a stable water/ice mixture and boiling water, and even that seemed “off” by 1 grad each.
Same applies with voltmeters, lumenometers, etc. Unless they’re NIST traceable, they’re just educated guesses.
Just curious. How consistent do ya find yer rectal ones?
Within one or two digrees? In any case you should prolly just assverage them.
PS. I just thot I’d ask cuz ya sound pretty anal about thermometers. :laughing: :+1:
Good catch, that’s what I meant (hence the interesting contrast with the lighting most people prefer) but I’m dumb and said the opposite!
the DUV of sunlight is nominally 0.0032, almost identical to the SST-20 4000k charted above.
This is why that LED may not demonstrate a noticeable green tint, when daylight adapted
the DUV of incandescent is 0.0000, so from that reference, the Tint of sunlight is above the BBL, into the green zone
the LH351d and E21a also tend to have Tint above the BBL, in particular the cooler ones.
It makes sense to me that people that use lights during the day, will prefer Tints that are cooler and greener, more like daylight,
while people who use lights in darker ambient adaptation will appreciate warmer color temperatures and less green tints
sometimes it is useful to emulate sunlight, 5000k+
other times emulating incandescent can be useful 2700-3200k
I think it is helpful to match the color and tint of our flashlights to our ambient white balance
on the warm end, I like my artificial light to be about 500k cooler than ambient, so the beam stands out more easily. So when Im in 3000k ambient, I like a 3500k LED…
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it occurred to me that the idea behind the TCR (what people find subjectively pleasing) is contained in the Kruithof Curve
that is, a group of people were asked what color temperatures they like at different Lux, and the results are plotted:
basically, at lower intensity, people like warmer light
“For example, natural daylight has a color temperature of 6500 K and an illuminance of about 104 to 105 lux. This color temperature–illuminance pair results in natural color rendition, but if viewed at a low illuminance, would appear bluish.
At typical indoor office illuminance levels of about 400 lux, pleasing color temperatures are lower (between 3000 and 6000 K),
and at typical home illuminance levels of about 75 lux, pleasing color temperatures are even lower (between 2400 and 2700 K). ”
What makes the rosy tint so popular? I guess we all agree that a flashlight with a duv greater than the duv of the ambient light doesn’t look as nice as one with a duv lower than that. But why?
Woodgrains look better with more of a reddish tint than a greenish or bluish tint. Skin looks better when pinkish than sickly green. Etc.
“looking better” is a substitution for “nicer” in the above context.
But ok, why is it looking better?