Cheap flashlights to compare tints

jon_slider · 2019-01-17T19:23:23.000Z

Efficiency is only part of the equation for me

I agree that Low CRI is going to be more efficient, but, for me, Low CRI is not acceptable

so my math says
a 90 CRI light has 29% more CRI than a 70 CRI light
and yes
the 90 CRI light will be 29% less bright, for the same runtime.

I wont accept 29% more runtime from Low CRI
since Low CRI is simply not acceptable, for my snobby self

what I see is essentially a direct tradeoff between CRI and runtime… I will take the CRI over the runtime, every time. Thats just my personal preference… Low CRI need not apply

ZoomieFan · 2019-01-17T19:47:55.000Z

I wish I had such a strong view as you have Jon. Then I could sleep tonite
Seriously, I have preference and more strongly dislikes. I can indeed buy a dozen lights and just check them out.
But I don’t want a dozen S2+’s one is enough.
Besides of that I want to learn. Even if it’s mostly useless theory, I want to learn.
And I did learn from the answers.
Done learning? Far from. But at least I know in which direction to look.

So I keep asking……
If my only use for a light would be reading tags like below. Both new and old. What tint or color would be ideal? When I write color I also include for example blue and red.

jon_slider · 2019-01-17T20:09:22.000Z

I would recommend the 5600k Sofirn C01 for those label reading tasks, because the Tint is not too green, not too blue, not too yellow, its just daylight white.

The most important factor is beam distribution, so I would want a beam with no hotspot

imo the Aspheric beam of the Yuji LED in the Sofirn is ideal for label reading, I like it even better than a Mule. I dislike beams with a hotspot for reading labels, because of the need to avoid glare, it tends to force me to move the light around more, to find a balance between the hotspot and spill, in order not to be blinded by the glare, caused by the difference in brightness between hotspot and spill

otoh, outdoors, looking down a path, trail, sidewalk, a beam with a hotspot is much better, it projects into the distance in a way that an Aspheric or a Mule simply do not.

Aspherics an Mules are better for reading, beause the beam is excellent when illuminating a flat surface at an equal distance from the observer, such as when reading a plaque or label.

beam examples:
imo the Yuji LED lens is Aspheric, and I personally find that more useful than a mule.

l-r Aspheric lens, 47s Mule, Sofirn C01

l-r Aspheric, Sofirn, Mule

imo the Yuji LED is fantastic indoors, and at close range
I do not consider it an outdoor walking light, but it does work great for seeing food while sitting at a picnic table

Besides the little AAA Sofirn C01, I like the aspheric lens in the Aluminum version of the Klarus Mi1c.

I also like the McGizmo Sundrop with High CRI LED, but, thats not in my budget.

.

I would use a beam with a hotspot to see down a tunnel, but when looking at cave paintings, I would want an Aspheric.

was watching Netflix the other night, like most nights, and noticed these beams:

can you see why I like the Aspheric, top, better than the little hotspot, on right?

Yokiamy · 2019-01-17T20:47:21.000Z

Probably you’d be better of with a TIR.
Recently, i have replaced the reflector of an S2+ with a 60 degree TIR, which gives a nice widely spread uniform beam. (The 4C tint looks great now)
If you want to read tagplates, you do not want a very bright hotspot which makes them unreadable, it will reflect too heavy. (Believe me)
Besides that, only the side will be readable with a bright hotspot.

Use the lens to replace the relfector of Convoy S2+ flashlight 18650 Flashlights

Sorry ,i can not upload video on Youtobe ,some problem with my goagent setting i am not sure you can watch this video on Youku video [image] [image] [image] [image] [image] [image] [image] [image] [image] [image] [image] [image]

ChibiM · 2019-01-17T22:44:30.000Z

peabody:

How about a p60 host and 3 or 4 p60 drop-ins? They got them cheap nowadays.

Agree. And if you want it cheap get them even in parts, you cannhave them probably below $10 per dropin. Less space and waste.

jon_slider · 2019-01-18T01:40:40.000Z

about CRI, the benefit and advantages are mostly about reds

However, I will add that it is also about CONTRAST!
which light makes the orange leaf POP?

.

compare 325 lumens w 70 cri, to 170 lumens w 90+ CRI
thats almost double the lumens and almost 30% less cri

if you were looking for orange leaves, which one would you want?:

some people dont care what color the leaf is, as long as they can see its there… but for times where showing reds matters, such as cooking, intimacy (Sex is more fun in High CRI), seeing colors other than green and yellow… why settle for low CRI?

note both lights show the leaf… even though the low cri light is brighter, hence “more efficient”, is it really more efficient at finding orange and red leaves… nope

see what I mean?:

here is a typical Low CRI LED, focus on the red bar

here is a Yuji High CRI LED, and a typical 4000k Nichia 219b

.

oh, and before anyone tells you that Neutral White has better color rendering, it does not… Low CRI is Low CRI

Friends dont let friends buy Low CRI… LOL!

ZoomieFan · 2019-01-18T05:38:58.000Z

Which one? Not an easy question, because it’s hard for me to make that choice without seeing the same in daylight. The leave looks unnaturally red to me, but then I know some leaves can have a very bright color.
The pole in the background on the 170N looks brighter. Why is that? Has it reflective material on it. The 170N leaves look far more blurred than the 325 leaves. Is that because the camera has trouble with almost half the brightness?

For me, Nichia was a synonym for high CRI. Yuji scores even better. If blue could be ‘fixed’ it will be very close to daylight. Is the difference really visible in real life? I guess the answer is something like “depends on which color you are looking at”.

I must admit I don’t fully understand the graphs. It would be my guess that if all colors bars are equally high the light would be CRI-100.
If so I would expect that all lights have at least one bar being exactly 100. For the Olight that would be R14/green. In other words I would expect relative values in the graphs, but they seem to be absolute values.

Back to reading tags again. If the tag would be the leaves and the letters that red leave then then high CRI would make the tage more readable because the red jumps out more.
I wonder if low cri in some situations (colors) increases contrast. For example I’ve read that blue lights, really blue not just blueish, are best for map reading. Likely because black lines pop out?
Or hunters following a blood trail best use blue or ultraviolet. That while from looking at the picture with the leaves more red would highlight red/blood.

Let’s say for whatever weird reason I want to read a book (just text no pictures) in pitch dark. I only have a small flashlight. Would high cree best for this situation?
Now assume the book has white paper and R14/green letters. Would the Olight give the best readability because it peaks at R14/green? Or would it just turn the whole book green?

I’ll stop (for) now, because I might have started over-analyzing again

FBsLights · 2019-01-18T06:35:51.000Z

I use P60 hosts and drop-ins for that purpose. Right now I have (6) solarforce hosts with newly built drop-ins that I’m comparing.
I’m searching for my favorite high CRI LED. Currently have several drop-ins with ~4000k high CRI LEDs to compare.
Check with SBFlashlights.com for closeout deals on solarforce hosts. Drop-ins can be made yourself for quite cheap. I use linear 7135 drivers so LED comparisons are done at known currents.
Making them yourself is the only way to control which LEDs and drivers you test.

The Convoy S2+ would be another great option.

Good luck and have fun! There are a lot of good LED options out there!

FB

jon_slider · 2019-01-21T03:29:45.000Z

FBsLights:

I’m searching for my favorite high CRI LED.

mine is the 219b 4500k 9080, at the moment

I like warmer when its full darkness, but cooler during the day, so its a good compromise for a multi ambient light environment, with a bias towards daylight.

High CRI is a subtle variable, and some people dont prioritize it, because of an interest in efficiency. But, a more efficient light, is not a High CRI light… Efficiency favors quantity over quality of light.

Let me try to drive the point home… for the OP
I like a flashlight that can show red colored things, I find red food appetizing…

I can imagine that when a mechanic is looking at different colored wires, it helps to see the Red Pop!
Or, imagine Im grilling steaks after dark, would you like yours yellow or pink?

Tjohn · 2019-01-21T13:18:04.000Z

An abundance of useful information is cropping up here from the ‘tint conscious’, some looking to compensate for vision issues.
As stated, tint and HiCri are severely influenced by the ‘driven’ output, with reflectors and TIR optics playing their roles.
Beam profile, lottery within bins, the reflectance and color of subjects, along with contrast between colors are all important.
A nice tint may be seen from an emitter on a white wall, while it is monochromatic, or unable to separate colors from one another.
A variety of lights and tints for different tasks makes sense.

A ‘Bling and Blind them’ Scorcher torch might have more lumens than finesse.
An indoor use EDC, technician’s, or manicurist’s light has stricter color parameters.
In true flashaholic spirit, all justification to buy more lights.

ZoomieFan · 2019-01-21T13:39:54.000Z

In true flashaholic spirit, all justification to buy more lights.

Yeah!!!
While I agree I’m usually not carrying several lights. So I want all my lights be as all-round as possible.
But with my newly bought Lumintop AA and especially AAA I learned that an carrying an extra light just for reading shiny metal tags/lables is a good possibility.

I still don’t know what’s best but the picture surely show what I do not want. Very informative!

I’ve ordered a bunch of lights to compare. But not as advised a dozen S2+’es.
I like to test other format lights and never owned a AA or AAA so I bought several in various tints and LED type. (see signature)
Not all have arrived yet but I hope that, while the lights are not from the same manufacturer they at least give me some inside.

From this thread I learned several things, one of those things is that I need more flaslights for testing :innocent:
What’s a asperic lens for example.

I do see another problem rising… I really would like a 21700 flashlight. Because I like compact for a certain cell size I really like DQG Tiny (got a 26650). But, yeah you guessed it, no high CRI versions…

Zulumoose · 2019-01-21T14:27:23.000Z

Because I like compact for a certain cell size I really like DQG Tiny (got a 26650). But, yeah you guessed it, no high CRI versions

The answer to that is an Emisar D4 (or D4S) Nichia 5000K version.
Compact, neutral, high CRI, great UI, powerful, ramping, quality in every way.
The only down-side is the heat on full output, turbo is like a naval broadside, use sparingly and make sure you aim for the enemy.

jon_slider · 2019-01-21T18:07:11.000Z

ZoomieFan:

What’s a asperic lens for example.

It looks like a magnifying glass and produces no hotspot,
left to right, aspheric, TIR, conventional reflector with hotspot

ZoomieFan · 2019-01-21T18:11:15.000Z

Yeah, me likes aspheric!

Would be great for label reading.

Here comes the big question. I now know Yuji is great and aspheric gets thumbs up for me. I think I like NW most (5500K?). I keep my lights in my pocket so it has to be small. 1000 lumen is super bright in my book. 800 pleases me too.

Does a light that combines all that goodness even exist?

Tjohn · 2019-01-21T19:47:12.000Z

The first thing that comes to mind is an Emisar D4 Mule with Nichia 5000k 9050 emitters and an 18350 tube.
The board is screwed down so the TIR could be removed.

ZoomieFan · 2019-01-21T19:59:00.000Z

From jon_slider’s review

Hand and yellow rock look most like daylight on the NW
The greenish rock on the 219b
The jewelry is a draw.
Is the the 219b performing so badly because it has a very low K?

jon_slider · 2019-01-24T00:27:17.000Z

ZoomieFan:

Is the the 219b performing so badly because it has a very low K?

Thanks for asking interesting, and detailed questions

some variables in play…
Low CRI LEDs tend to produce less red than sunlight, and more green and yellow than sunlight
High CRI LEDs tend to produce as much or more red than sunlight, and not too much green or yellow

Since LEDs dont have the same spectrum as sunlight, there are trade offs.
High CRI will show reds, that Low CRI cannot. Low CRI will overemphasize green, and yellow.

anyway, given the limitations, lets walk through the separate treasures

the Coral is redder in high CRI, than sunlight, the Low CRI light makes the coral less red than sunlight…

The turquoise under High CRI looks almost identical to sunlight, and the Low CRI looks greener than sunlight

The Amber looks redder than sunlight under High CRI, and yellower than sunlight under Low CRI

.

given the limitations, I prefer too much red, rather than too little; not too much green, rather than too much, and not too much yellow

I avoid Low CRI LEDs, due to their poor Red output, and excessive green and yellow output.

The High CRI images are from the light on the left, the Low CRI images from the light in the middle, the light on the right is there to help the iPhone set a relatively useful white balance (5500k, although too green) for sake of comparing the first two LED Tints

Given the choice between too pink or too yellow, I choose too pink

bear in mind that our brain will adapt to any single color beam, and tend to interpret it as a white reference, when it is alone.
because of that, the pink light, does not look as pink as the photo, unless it is viewed during times when the brain has set its white balance to daylight. When my brain has set its white balance to the incandescent light in my home, it looks white, not pink.

The yellow Low CRI beam looks disgusting during the day, its not much better in the evening, but suprisingly, if I wake up in total darkness, I dont really notice how excessively yellow it is… but the yellow beam is low CRI (and more specifically low Red output), so it will never be able to show me how pink a steak is in the middle.

.

ZoomieFan:

Does a light that combines all that goodness even exist?

500+ lumen levels are marginally supported by 16340, but are really 18650 territory. I dont know which 18650 lights offer Aspheric lenses, Im focused on 16340 atm.

The 5600k Yuji only outputs 10 lumens, it uses AAA
the aspheric beam in the yellow light in the middle, maxes out at about 600 lumens, but it is not realistic to run that for long, given the battery is 16340 size, and the lumens drop by about 30% when going high CRI

the lights that come to mind with aspheric lenses are, the Utorch S1 Mini shown with the yellow beam, the Klarus Mi1c aluminum model (not the copper, titanium, or High CRI models), and there is an Aspheric Sunwayman:
https://www.batteryjunction.com/sunwayman-t16r-flashlight.html

for my use, all those lights would require an LED swap, and since Im in love with Nichia LED swaps, I would recommend the Klarus over the Sunwayman. I dont recommend the Utorch (even though I own 3 of them), it has design issues with a loose ground wire. There are other factors, such as the LED footprint, and whether the mod is extensive enough to replace the LED board, or just the LED… The Klarus is the least complex mod.

There is a High CRI Klarus Mi1c, but it has a hotspot, it is not aspheric… but thats the closest to off the shelf High CRI that comes to mind atm… all the lights I use are modified, the LED has been changed to suit my pleasure, and practically no single light combines all my favorite features. I primarily use one aspheric ligh modded to 4500k High CRI, and one reflector light with hotspot, also modded to 4500k High CRI

since you seem interested in 5000k+, you might be served by N219c. My personal tint preferences avoid those, due to what I consider excessive yellow and green, and insufficient Red output. Did I mention Im a Total Tint Snob?

good luck with your search(es)
I hope you share your impressions of lights you try

ZoomieFan · 2019-01-24T06:23:49.000Z

Trade offs…
I like to look at money, so maybe I need low CRI

Do you have a comparison between Nichia and Yuji?

jon_slider · 2019-01-24T07:22:26.000Z

ZoomieFan:

Do you have a comparison between Nichia and Yuji?

yes, I like when you ask questions I know the answer to, LOL

bear in mind that the Yujis are limited to 10 lumens (sofirn C01 AAA) or less, Nichias can do up to 500 lumens (Bob_McBob Zebra 18650)

I recommend you try one Black Sofirn C01 in 3200K Yuji, and one Black Sofirn C01 in 5600k, here is the link

I expect you will prefer the 5600k, and Im suggesting black (instead of the red or blue bodies) hoping there will be less of a hotspot, pics here

ZoomieFan · 2019-01-24T08:10:33.000Z

yes, I like when you ask questions I know the answer to, LOL Smile

I’m gonna to up the difficulty level! :smiling_imp:

Do you have pictures of those stones with Yujis and Nichia of the same K.

3000K isn’t for me, that’s sure.
5000-6000 Nichia could be good.

So Yujis are only suitable for AA or AAA lights. Pity, but at least I know now I don’t have to search for a 18650+ with a Yuji.

I hope you share your impressions of lights you try

I will. All the AA and AAA in my signature are ordered recently. Sofirn Nichia’s are still in the mail.
The Lumintops are nice lights. Nothing special when used as an ordinary flashlight. I can’t describe it but, with the diffuser caps on the light feels pleasant.
The Nightcore’s diffusor gives a less pleasant like. Nightcore uses hard plastic, Lumintop soft silicon rubber or whatever it is. Maybe because lumintop filters out certain wavelengths is feels more relaxed…?