Comparing CRI: ordered 14* Convoy s2+ and 11 LEDs

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ChibiM
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Comparing CRI: ordered 14* Convoy s2+ and 11 LEDs

After reading some comments in the lovely CRI topic Big Smile I'd love to see the difference myself.

I'd like to see if I can get some cheap flashlights like the Convoy S2+ but with different LEDs with different CRI. 

 

 

Update 2022-01-07: 

Ok, I placed the following order: 

14* Concoy S2+ (1* with Nichia 219C, and 13* with Luminus SST20 4000K) at Fasttech

20* clear lenses (because I read some people said the AR coated lenses from Convoy shift the tint/DUV)

And the following LEDs at Kaidomain

LEDCCTCRI
CREE XP-E HEW Q5 5D24000K80
Cree XP-G3 S5 5C14000-4500K-
Cree XP-L HD V4 5A34000-4200K-
Cree XP-L HI U6 5A34000-4200K-
Cree XP-L2 HD V3 5A4000K-
Cree XT-E S4 5A34000K-
Nichia 219BT4500K92
Nichia 219CT4000K80
Samsung LH351D5000K90
Samsung LH351D4000K90
Samsung LH351D5700K90
Edited by: ChibiM on 01/07/2022 - 06:01
raccoon city
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To be less confusing, maybe replace the words "test" and "testing" with "compare" and "comparing".  :THUMBS-UP:

 

ChibiM
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thanks!! good one

I changed that

raccoon city
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Also, maybe you could get away with getting just two similar flashlights.

One that's very high CRI, and one that's much lower CRI.

ChibiM
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raccoon city wrote:

Also, maybe you could get away with getting just two similar flashlights.

One that's very high CRI, and one that's much lower CRI.

That's possible, but there might be differences between manufacturers as well, so it could be a better comparison

MaverickMCS
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I would suggest something like a p60 host, but in the end it might end up costing the same as the s2.

Raccon City’s idea might be the most sensible money-wise. Get something like the lh351d or XHP50.2 at 70 and 90 CRI and same CCT and do a comparison.

_

pc_light
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Great idea, I always appreciate reviews who go that extra mile to offer such comparisons.

Would you consider using the old standard. a P60 drop-in? Would be inexpensive enough.

I think some good color charts are important as well, can be simple like colored squares or more complex like scenery.

Seeking the light.

chops728
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This sounds like my days of comparing Audio Cables — one set of wires against another —- Blind test are even more confusing

Cover up the lights so you don’t know which one is which —you’ll be surprised what choices you make —- I recently acquired a XP-L 5D triple that I’m liking more than many of my Hi CRI triples — I have plenty —— Not sure if it’s just the Tint that’s so attractive

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oh ChibiM

you have to have a Solarforce over there don't you ?

 Why not just do a number of  P-60 drop ins .

 Pills were like $3.

 one host ..

 I'd suggest you fully diffuser the beam as well so no colors get caught up in the spill or tint shifting thoughout the beam .

       καὶ τὸ φῶς ἐν τῇ σκοτίᾳ φαίνει καὶ ἡ σκοτία αὐτὸ οὐ κατέλαβεν

                            

       Dc-fix diffuser film  >…  http://budgetlightforum.com/node/42208

ChibiM
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Yeah, I think there are many differences, so the more the better Big Smile

I was looking at Kaidomain for P60 drops, but they don't have that many LED choices.. 

ChibiM
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oh, build my own P60's.. that possible as well.. hmmm maybe a better option.. (at least cheaper)

hold on... I'd like to compare them side by side...... so probably not an option, unless I get more P60 hosts Big Smile

Haukkeli
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Maybe it would be smartest to do the comparison without any optics. That’s one variable less.

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Is your goal to compare them side by side? Or will individual tests do?
If so, i would suggest a bench power supply with a proper heatsink like Djozz uses for led testing,

ChibiM
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I'd like to have them installed in flashlights.. so I still think the S2+ is probably the best option to go... 

Maybe add some DC fix to smoothen the beams. 

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       καὶ τὸ φῶς ἐν τῇ σκοτίᾳ φαίνει καὶ ἡ σκοτία αὐτὸ οὐ κατέλαβεν

                            

       Dc-fix diffuser film  >…  http://budgetlightforum.com/node/42208

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Convoy has consistent quality, which is a big pro, and as said the S2+ is one of the cheapest options. Cheaper options might give you less quality and you may end up with unreliable parts which are not representative enough for a good comparison.

And separate pills still dont give complete Flashlights. A complete Flashlight is probably just a few dollar more.

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Wurrkos has a package deal to buy all three of their fc11. 2700k hi cri, 4000k hi cri, and 5000k low cri. Prepare to park the 5000k because you ain’t gonna like it. As I said in the other post, it’s not just about the cri. 3 to 4k and hi cri is The sweet spot.

You can't compare the big flashlight in the sky to the little flashlight in your hand.

ChibiM
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I prefer to have only 1 CCT, but since there are still a few LEDs that don't have a 4000K option, I prefer to go higher (4500K)  instead of lower (3500K). 

So in terms of popular 3volt Hi CRI LEDs around 4000K, what do we have?

  1. Luminus SST20... 4000K... CRI95
  2. Nichia 219C R9050... 4000K... CRI90... 
  3. Samsung LH351D... 4000K ... CRI90
  4. Nichia 219CT... 4000K... CRI80

Some LOW CRI LEDs around 4000K: 

  1. CREE XP-L2 HD V3 5A 4000K (Low CRI)
  2. CREE XP-L HI U6 5A3 4000K (Low CRI)

 

 

 

But some are only available in other CCT and low/high CRI 

So these are optional: 

  1. CREE XT-E R4 4D 4500K (Low CRI)
  2. Nichia B35AM R9080 4500K CRI?? (this is 6V)
  3. CREE XP-G3 S5 5C1 4000K - 4500K (Low CRI)

 

I'm probably leaning towards the Convoy S2 (not S2+) at Fasttech, it's only $9 without driver and LED.

https://www.fasttech.com/products/1618/10002463/1277401-convoy-s2-diy-edc-led-flashlight-host 

ChibiM
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And which manufacturer has 2 LEDs with the same CCT but 1 with high, and the other in low CRI?

mattlward
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chops728 wrote:
This sounds like my days of comparing Audio Cables — one set of wires against another —- Blind test are even more confusing

Cover up the lights so you don’t know which one is which —you’ll be surprised what choices you make —- I recently acquired a XP-L 5D triple that I’m liking more than many of my Hi CRI triples — I have plenty —— Not sure if it’s just the Tint that’s so attractive

Those xp-l’s have amazing tint and they are still 70 cri. The tint, not the CRI, makes them really feel like a high powered 219b sw-40/sw-45k mix. I use 5A2 and 5A3 XP-L Hi’s often when I want great tint, great output and decent CRI.

I went through this comparison phase as well. I did and still do it with P60 dropins, They are easy to build, they are cheap and they come in flavors… SMO and OP reflectors, triples and quads. I really do wish SolarForce was still around. Their dropins were decent and their reflectors were very well designed. Their drivers not so much, but that is an easy fix as well. The KD reflector dropins are pretty darn nice as well. They have a driver retaining ring, so no trying to heat the pill enough for a decent solder connection. I did really like the SolarForce low voltage driver as well, have used it in a few P60 aa/14500 builds, but they are long gone as well. Moved on to Convoy 4 mode AA/14500 drivers and with the 2xAA/2×14500 driver on the way, I can now get a decent driver in my dual cell lights.

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

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You forgot the famous 219b

mattlward
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Yokiamy wrote:
You forgot the famous 219b

I did not notice he missed that one! Have shells with early and late production of each bin I could get my hands on. Do not miss that one!

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

mattlward
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ChibiM wrote:

And which manufacturer has 2 LEDs with the same CCT but 1 with high, and the other in low CRI?

Do any? Maybe between a version 1 and 2 emitter? Maybe in the Cree lineup with xp-l’s or xp-l hi’s? Now you are going to make me dig! Maybe Nichia with the early iterations of the 219b, I seem to remember 9080, 9050… were there others?

I remember when a cri of 70 would have been a godsend! I think that is why the xp-l hi’s at more or less 70 do feel pretty good after the days of the xp-g and xm-l.

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

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ChibiM wrote:

And which manufacturer has 2 LEDs with the same CCT but 1 with high, and the other in low CRI?


Doesn’t Samsung manufacture LH351D in 70 cri also?
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Haukkeli wrote:
ChibiM wrote:

And which manufacturer has 2 LEDs with the same CCT but 1 with high, and the other in low CRI?

Doesn’t Samsung manufacture LH351D in 70 cri also?

I think in only some CCT’s?

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

Quadrupel
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Get some Cree from Mouser

Haukkeli
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Well, there is the answer! LH351D come in CRI flavors!

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

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ChibiM wrote:

And which manufacturer has 2 LEDs with the same CCT but 1 with high, and the other in low CRI?

MaverickMCS wrote:
…something like the lh351d or XHP50.2 at 70 and 90 CRI and same CCT and do a comparison.

Those two and the XHP70.2 are the ones that first come to mind.

_

ChibiM
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Ok, and now I want them soldered on boards Big Smile who sells them. 
I don't like modding, so having them on boards is kind of a requirement, and available at normal sellers (not Mouser) 

mattlward
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ChibiM wrote:

Ok, and now I want them soldered on boards Big Smile who sells them. 
I don’t like modding, so having them on boards is kind of a requirement, and available at normal sellers (not Mouser) 

Normal list…
Mountain Electronics (USA)
KaiDomain
Fasttech
Emisar/Noctigon thru Hank
Convoy (Simon) on AliExpress

EDC rotation:
KR4, SST-20 FA3 4000k (favorite!)
FW3A, Nichia 4000k sw40 r9080 (second favorite)
FW1A, LH351D 3500k (third favorite)
FW1A, XP-L Hi 3A
FW3A, LH351D 3500k
FW3A, SST20 FD2 4000k
FW3A, Cree XP-L Hi 5A3
Emisar D4V2, SST20 4000k
Emisar D4V2, brass E21A 3500k (night light of choice)

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