New Convoy S21D w/ legendary Nichia 219b :) - Impression & comparison w/ Nichia 519a & E21a (in Emisar) & other great LED's.

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cannga
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New Convoy S21D w/ legendary Nichia 219b :) - Impression & comparison w/ Nichia 519a & E21a (in Emisar) & other great LED's.

Not too long ago I was nit picking and memorizing lumens and throws of Amazon flashlights; I needed a bright flashlight for our evening walk along a nature trail in our neighborhood. Since then, the hobby somehow has made an abrupt left turn towards color quality of the beam Innocent , and here I am with a bunch of Nichia’s, generally considered the “best” in the business when it comes to color quality and accuracy (CRI). These new “hobby” flashlights couldn’t light up the path like my Nitecore MH12S or Olight M2R Pro Warrior, as they have little throw to speak of. What they do have is color-rendering accuracy and a unique ability to make colors “pop,” for example green leaves & colorful flowers along the trail more distinct and beautiful. Every shade and every color stand out from each other. That’s why I buy them and honestly at 30-60 bucks a light it is difficult to resist the temptation. Collecting Nichia lights has been such a wonderfully inexpensive hobby compared to some of my previous financially disastrous ones like sports cars and high-end audio :-).

The Convoy S21D is a 21700 light recently released by Convoy. Two LEDS are offered at the time of this writing: Nichia 219b and 519a, both @ 4500K CCT. The 219b LED with its beautiful rosy/magenta tint needs no introduction and likely has the most number of obsessed owners Smile in this hobby. OTOH Nichia 519a is a newer, larger LED (nearly twice as big die size) and would make a very interesting comparison. I ordered 2 Convoy S21D’s with Nichia and a Convoy M21B with GT FC-40 without any problem, but now they don’t seem to be not available on AliExpress. I believe banggood.com also has them, but cost may not be as low.

The other flashlight used in this comparison needs no introduction either; it’s the incredibly popular Emisar D4V2. Emisar is a heaven for 219b fans, offering multiple CCT versions of this LED, but it doesn’t have 519a, yet. OTOH Emisar does have the Nichia E21a, a LED that is also highly regarded, but is not nearly as popular (see discussion #3 below for possible reason why). Of note Emisar uses 9 amp Constant Current driver for 219b, but only 5 amp for the E21a.

Convoy Accessories ReviewIMHO YMMV

Clip-on Clip https://www.aliexpress.com/item/1005002413109298.html?spm=a2g0o.order_li... A little too small at 22 mm diameter so I could see a little air gap between clip and light. I would have preferred probably 25 mm. Fits S21D, M21E (after bending clipping arms outward a little). Might fit M21B and M21F but I didn’t try because it’s tight and I didn’t want to scratch the finish. I much prefer the screw on clip (better in every way IMHO), but if this is what you like, I would bend the arms outward a little so that it doesn’t scratch the light’s finish.
Screw-on Clip https://www.aliexpress.com/item/1005002434411703.html?spm=a2g0o.order_li... Perfect for my need. Fits S21D, M21B perfectly, does fit M21F and likely E, but would help if the screws are a little longer for absolute secure attachment. Ok I hope what follows makes sense: For the Convoys with the side switch, M21E and M21F, I prefer to keep the clip at 9 o’clock position (90 degrees to the left of the switch) so that it doesn’t go under my right hand grip. For the M21E the holes are perfectly placed so I use screw-on. For the M21F the holes are not, so I use the clip-on, after I’ve bent the clipping arms outward.
Metal lighted switch https://www.aliexpress.com/item/1005002389032527.html?spm=a2g0o.order_li... IMHO mandatory Smile for S21D and M21B. For switch color I chose blue because of less current drain vs orange (9.4 mA vs 14 mA). The metal switch has a wonderful nicely tactile click, more defined in its action and night and day better than the rubber version. For me, it is especially critical for the 12-GROUPS UI used in these lights because in this UI both click (full click) and tap (half press) are important, and the tap is so much easier with it. The metal switch has a built in half-way stop for the tap’s half press and it makes all the difference IMHO. Install takes 5 minutes, completely plug and play. The most challenging step is to remove the retaining ring which is very tight and would likely be difficult if you don’t have something similar to this needle point pliers https://www.amazon.com/gp/product/B000JNRR0Y/ref=ppx_yo_dt_b_asin_title_... .

More throwy replacement optics
Convoy Simon plans to offer options for 10 and 30 degree bead TIR optics in addition to the 60 degree OEM one.
Sofirn https://www.sofirnlight.com/products/quad-optic-lens-for-if25a . If you like to convert the beam to something less floody and more throwy, replace the stock optic with the optic from Sofirn IF25a. The fit is nice and tight, nothing loose. The beam has a more defined hotspot and hence becomes more throwy.

Edited by: cannga on 06/26/2022 - 10:37
cannga
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Some important specs:

Flux from Convoy:
219b 4500k: max 2000LM
519a 4500k: 2600LM
Note: 519a as measured by stephenk = 2055 LM

CRI for 219b sw45k Ra 96, R9 97, R12 79, DUV -0.0095
CRI for 519a 4500k Ra 93.6, R9 82, R12 80, Duv 0.00091

Lens TIR 60 °

Driver 8A Buck (first release, like mine) or 12A FET (the batch sold in June of 2022)

cannga
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Impression (Re-post from discussion below).

**************************************************************
Convoy S21D w/ 219b 4500k
Beam & color/tint quality: Floody and bright for a Nichia light. Brightest in my small collection of Nichia’s and this plus the other Convoy S21D (with 519a) are the only ones that I feel are somewhat useful for our evening walk. IMHO this pair of S21D are the first Nichia lights that leave the “boutique” camp, and edge towards “functional.” As for color/tint, for all practical purposes it’s the same between Convoy and Emisar. For beam angle, Convoy is more floody and has less of a hot spot vs Emisar.
What’s so special about 219b 4500k? An unmatched ability to make more distinct different colors (green leaves vs light blue flowers of rosemary) and shades of colors (light green vs dark green of leaves). Scenes of plants and flowers show fantastic depth. Flowers “pop” against leaves. A joy to use if you like to observe and enjoy flora and fauna along your evening walk.
Specs Absolutely eye popping: Ra 96, R9 97, R12 79, DUV -0.0095
Construction & cosmetic: “Functional,” in an industrial way Innocent . One example: there is really no knurling to speak of and flashlight therefore just a tad slippery. Doesn’t feel solid like my Olight (the best among my lights) but then the cost of 1 Olight equals three (!) Convoy S21D’s so I’m not complaining.
Design & Use:
21700 battery, which means a larger body than Emisar, but still only about size of my Olight M2R and still pocket-able.
The LiitoKala 21700 battery that comes with the light shows 4877 mAh and internal resistance 52 with my Opus. I don’t know max current draw of this battery but it works fine.
No Anduril, which is a plus or minus depending on your point of view. I prefer Anduril.
No Anduril also means nutty hobbyists cannot play with settings such as thermal regulation’s max T (factory setting is 55 C per Simon), but then judging by the result, maybe we don’t need to.
Rear switch only – I prefer side switch for this type of light but again, personal preference.
Comment The Convoy at 30 bucks is an incredibly compelling flashlight. A deserving backbone for any light collection if beam quality and color are priorities. Nichia 219b sw45k LED is discontinued so who knows how long supply will last; if you’re interested I would buy it quickly. IMHO if there is one Nichia light that you should buy, it’s this one, primarily because of its lasting brightness. The give away price and 21700 battery don’t hurt either.

***************************************************************
Convoy S21D w/ Nichia 519a 4500k

Beam color: Everything stated above about S21D with 219b applies here, EXCEPT beam color. Whereas 219b has that famous rosy/magenta tint (a result of a negative, below BBL Duv) that every hobbyist loves, 519a has a warmer, more yellowish/golden tone (a result of a positive, above BBL Duv). During comparison, I actually was struck at how different 519a is to 219b.

519a is recommended because of how different its beam color is from 219b, and yet it still has spectacular CRI specs ( Ra 93.6, R9 82, R12 80, Duv 0.00091). While 219b has incredible and un-matched color rendering, sometimes the magenta tone of 219b might be too much for me :-), and 519a’s golden tone provides a relief. OTOH if you don’t like a slight golden tint, this is not the LED for you. I love it because for me it’s like having different wines or food from different restaurants, all good yet different. I guess it’s called having fun with a hobby Innocent .

Otherwise, from my test using photography and checking light level, this and the S21D with 219b are the two brightest in my small collection of Nichia lights. The 2 are the most useful light for practical use because of their brightness and would make a wonderful back bone to any light collection in which beam color/quality is a priority.

***************************************************************
Emisar D4V2 w/ E21a 4500k
I’ve come across post where someone waxed poetic about this E21a LED like it’s the second coming, and I’ve come across post where it was the worst LED the person had ever seen. Based on my pictures and of course live view observation, IMHO this LED is close in beam color to the 219b 4500k, but more yellowish-greenish. Of note Emisar needs to use frosted optic Carlo 10623 for the E21e to smooth out the beam, but this frosted optic makes the light “hotspot” dimmer, and too dim for me. I’ve tried the clear optic Carlo 10622 with this light, but then the beam has a not-too-nice yellow greenish ring/corona (see pictures later in this thread HERE). 219b has no such problem using the same optic. Unless you see something that you really like, personally I would pass on this LED and get the 219b instead.

***************************************************************
Emisar D4V2 w/ 219b sw45k
Beam & color/tint quality: Floody with a central hotpot that is brighter than Convoy at Turbo start, but after just a couple minutes, step-downs occur and brightness begins falling behind Convoy. The useful part of the beam becomes very small and hence not much area is covered (you could see the difference between the 2 lights in the beam shot below). This is observed in a D4V2 that has been calibrated and max temp limit raised to 55.
Construction & cosmetic: This is one of the most popular lights for hobbyists for good reasons: it’s pretty, construction quality very nice, a notch above Convoy. The auxiliary lights are fun. I enjoy taking pictures of this light; it’s a great gift light.
Available in 4 anodized colors, plus brass, copper, titanium material available. All very pretty. Keep in mind copper and brass are very heavy. Almost too heavy.
Design & Use:
18650 battery, which means a very nice small light that fits nicely in the hand. But, will a 21700 be coming?
Anduril 2
Side switch: One of the nicest I’ve used, clicks nicely and clearly. I have one with the raised ring around button option, and I don’t like it at all.
Comment Emisar sells 219b and E21a lights in several different CCT’s. This means you ARE going to end up with an Emisar one of these days Smile . To be at Emisar’s web site (oddly named www.intn-outdoor.com) makes me feel like a kid at a toy store Christmas time. I applaud Hank’s effort to supply us with such a dizzying array of fun lights.

Both owners, Hank of Emisar and Simon of Convoy, responded promptly to my multiple questions. Customer service is top notch for both. All above discussion is IMHO & I could be wishy washy so opinions likely will change.

cannga
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Comparison of Convoy 219b and 519a with pictures of the front garden. I like and recommend both lights btw; at $30 a pop they are simply irresistible. Smile A great start for anyone curious about high CRI lights.

It’s interesting to note that without a lightly colored background such as my living room’s light beige wall (versus dark green background of this picture), the magenta tint of 219b is not as easily noticeable. In addition, differences between LED are more subtle. The easiest way for me to tell which LED is which is the flat grey surface of the palm tree. Here the more yellow tint of 519a is more obvious.

Looking at the hot pink geranium flowers, 219b somehow just seems to make the flowers stand out more from the leaves. More depth and 3D, color differences more distinctive – just my subjective opinion so if you don’t see it, I won’t argue :-). It will be interesting to do a crop comparison.

cannga
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Crop of above picture. Shot w/ Canon DSLR in RAW format, WB 5000k, exposure matched as best I could to not favor one LED or another. I have a clear preference but both LED’s are excellent – if you like a warmer tone go for 519a, but do get the 219b FIRST Innocent .

Based on my own real life observation (not photography) if you want to see subtle shade of color changes and to see flowers “pop” against leaves etc., the 219b 4500k is unmatched imho. In the Convoy S21D host the bright floody field is an added bonus – at 30 bucks an incredibly compelling value and the best of all the lights I have bought.

PS If you are buying S21D or M21B, be sure to also purchase the rear lighted metal button and the screw on metal clip from Aliexpress Convoy store – both are just a couple bucks each but are mandatory Smile imho.

cannga
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Convoy S21D data from AliExpress site.

LED: Nichia 219B 4500K / 519A 4500K

Driver: 12 groups max current output 8000mA (Emisar uses Constant Current 9 amp driver for 219b and CC 5 amp for E21a)

Temperature protection management inside

Low voltage warning: Yes

Reverse polarity protection: Yes

Lens type: AR-coated glass and 60 degree bead TIR lens

Mode memory: Yes

Required battery type: 21700 lithium battery (unprotected and length not more than 71mm)

Flux: max 2000LM (219B) / 2600LM (519A)

CRI for 219b sw45k Ra 96, R9 97, R12 79, DUV -0.0095
CRI for 519a 4500k Ra 93.6, R9 82, R12 80, Duv 0.00091

Diameter(Head/Body): 32.1 / 27.2 mm

Length: 126.5 mm

Weight: 106g

Both Convoy S21D and M21B have temperature regulation. It is set at 55 C in both lights.
Emisar D4V2 also has temp regulation. The factory setting for upper thermal limit is 45 C, but I changed it in all my D4V2’s to 55 C.

Temperature after 25 minute run-down from Turbo/Max brightness level, measured with IR gun pointing at the head area. Note that this is laying on plastic in a room without any cooling. During my walk it is considerably cooler and I could hold either Convoy without any problem.
Convoy S21D —-> 59 C
Convoy M21B —-> 59 C
Emisar D4V2 219b 4500k (with max thermal limit set to 55 C) —-> 49 C
Olight M2R Pro —->47 C
Sofirn SP36 BLF 400k —->45 C

cannga
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In case you are new to this here are what I’ve bought and used

Convoy S21D with Nichia: https://www.aliexpress.com/item/1005003779341243.html?spm=a2g0o.order_li... If no longer available check out https://www.banggood.com
Emisar D4V2 with Nichia: https://intl-outdoor.com/led-flashlights/emisar-d4v2-high-power-led-flas... . Also available at https://jlhawaii808.com/ with less options for button & material choice, but completely legit and faster shipping from Hawaii. Note: Personally I don’t like the raised ring around button.

Samsung 40T 21700 Flat Top Battery for Convoy: https://www.18650batterystore.com/products/samsung-40t?_pos=2&_sid=b626e...

Samsung 30Q 18650 Flat Top Battery for Emisar D4V2*: https://www.18650batterystore.com/products/samsung-30q?_pos=1&_sid=b230a...

Opus BT C3100 v2.2 charger from legit AliExpress store: https://www.aliexpress.com/item/1005002811401255.html?spm=a2g0o.order_li...

XTAR MC2 charger much less expensive https://www.18650batterystore.com/products/xtar-mc2?utm_campaign=8595014...

The Samsung 40T and 30Q are high current and un-protected, both highly recommended for these lights. The yellow Litto something (what with these names lol) battery came with the Convoy M21B light.

Opus BT C3100 from AliExpress is about half the cost of same thing on Amazon. The seller I quoted is legit and the thing came in around 10-12 days IIRC. AFAIK Opus is one of the few chargers that could test internal resistance and capacity accurately and highly recommended.

Opus BT C3100

XTAR MC2

UNBLF
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Well…Apparently the beam shots didn’t make it.

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The Convoy store is temporarily closed due to lockdown which is why they appear unavailable.

The S21D with 519A is awesome, a good rival for the E70 GT-FC40.

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Pardon me for the delay. There’s someone else in the household and she may not like me to sit glued to the computer all day. Anyway for me the wait for the arrival of these new Convoy’s was excruciating because I so much want to compare 219b versus 519a. Everyday I checked tracking and every few days I asked Simon where lights are and how come it’s on this so and so state for so long. It ended up taking a little longer than other stuffs, about 20 days (vs 10 days for the charger for example) and when the lights finally got here I felt like a kid on Christmas day.

All shots as usual were taken in RAW format with fixed camera’s White Balance, 5000k, and in complete darkness. There was no other light source except the flashlight and the pics not infrequently were taken in the middle of the night (because I am crazy when it comes to hobbies?). The fixed white balance hopefully means all my shots at different times should make valid comparison with each other.

I like to take pictures of lights on the “wall of truthSmile (one end of my living room). These shots ruthlessly expose differences, for me much better than the small white-wall beam shots. I put my son’s USC cap in the middle of the pic in case someone wants to see R9 strong red’s rendering. So… decide for yourself but yes I was surprised at the big difference, so much so I am thinking I should re-do the shots tonight. The famous magenta tint of 219b is clearly visible. Whereas 519a has a warm golden tint with a hint of magenta. 219c 5000k is a little “cold” but daylight accurate. The LED’s are all different, why it’s such a very interesting hobby and I like them all for different reasons.

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congrats on your lighting options

those are really nice photographs!

thanks for taking the time to share

tint differences aside, in terms of CCT, it makes sense that the 5000k LED looks whitest at 5000k White Balance

I dont think you need to retake the photos, unless you want to demonstrate what happens when our brain is white balanced to 3000k, at night, as opposed to 5000k, during the day…

warning, you may feel a need to buy some 3000k lights soon.. lol
.
slippery slope, enjoy the slide Wink

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I took the 2 lights out for my nature walk tonight and my impression follows. These Convoy’s are bigger/longer than Emisar D4V2 but still fit in pocket pants easily. I have a preference for the small form of D4V2 but then D4V2 has only 18650 battery, and I think maybe the larger and I think maybe the larger space (EDIT: and thermal mass – Convoy being a larger light) at the head of the Convoy dissipates heat better. Both lights turned fairly warm but not too hot to hold. They are as expected very floody with low level throw. I have to leave the lanyard on to keep them from rolling off the table, but wish there is a pocket clip I could use. Will ask Simon about this.

219b: Most of all, continues to impress with its ability to make shades of colors stand out. Light grey vs dark grey of barks, light green vs dark green of leaves. Every color, every shade stands out clearly. The rosemary plant for example: small blue flowers stand out against green leaves more clearly and beautifully.
519a: Clearly brighter than 219b. The warm yellow-golden tone is very soothing to my eyes. This is the light I would use if I am not trying to see the different shades of brown soil and grey barks Innocent .

Convoy hit a home run with these lights and I recommend both, without reservation. I believe they are the first 21700 lights with Nichia 219b/519a. Personally I wish they have on-board USB-C charging but then they wouldn’t cost 30 bucks. If you are new to this hobby or don’t have any Nichia light, these 2 and especially the 219b should be very nice addition to the collection, IMHO.

Pic of the metal switch and clip from Convoy (see discussion in post #1 above). For me the metal switch is a must-have for the 12-Groups Convoy UI as it makes both “click” (full press) and “tap” (half press) so much easier to engage. Especially the half press since there is a now a “built-in” FIRM stop at half press, the fixed outer metal ring. They are also VERY pretty.

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Thanks for sharing. I really like the dedomed 519a 3000k. Looks like rosy 2400k

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cannga wrote:
I took the 2 lights out for my nature walk tonight and my impression follows. These Convoy’s are bigger/longer than Emisar D4V2 but still fit in pocket pants easily. I have a preference for the small form of D4V2 but then D4V2 has only 18650 battery, and I think maybe the larger space at the head of the Convoy dissipates heat better. Both lights turned fairly warm but not too hot to hold. They are as expected very floody with low level throw. I have to leave the lanyard on to keep them from rolling off the table, but wish there is a pocket clip I could use. Will ask Simon about this.

219b: Most of all, continues to impress with its ability to make shades of colors stand out. Light grey vs dark grey of barks, light green vs dark green of leaves. Every color, every shade stands out clearly. The rosemary plant for example: small blue flowers stand out against green leaves more clearly and beautifully.
519a: Clearly brighter than 219b. The warm yellow-rosy tone is very soothing to my eyes. This is the light I would use if I am not trying to see the different shades of brown soil and grey barks Innocent .

I plan to take pictures of my backyard garden later; hopefully they would show what I described. Convoy hit a home run with these lights and I recommend both, without reservation. I believe they are the first 21700 lights with Nichia 219b/519a? Personally I wish they have on-board USB-C charging but then they wouldn’t cost 30 bucks. If you are new to this hobby or don’t have any Nichia light, these 2 and especially the 219b should be very nice addition to the collection, IMHO.


S2+ snap on clip and screwable clip both fit that host. I recommend the one with screws.
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The beamshot of Convoy 219B looks “richer” than the Wurkkos TS21. I think Convoy has now dethroned that TS21 as giving the most accurate and pleasing rendition of the the room.

cannga
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What are these Emisar’s doing here in a Convoy thread? One reason: Nichia E21a 4500k, not avail w/ Convoy. Of all Nichia LEDs, E21a is for me the most elusive and mysterious to learn about. Do a google search and I would see all sorts of opinions, and of course, they don’t agree. 

Owners wax poetic about its quality “E21A 4500K appears as a perfect neutral with flawless tint to me…”   

Or hate it “Just got my first 219b sw45k and ran it next to e21a 4,500 and the e21 is pretty sad next to it.”

More “The 4500K E21A, on the other hand, needs the frosted optic. It isn’t as apparent in these photos as it is in real life, but there’s very strong tint shift in the spill: some areas are fully yellow-green, while others are so rosy that they look brown.”

Next post I will have picture comparison of these LED’s.

cannga
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Thanks everyone for your help & comments. These next 2 shots come from 2 very famous Nichia’s in the equally famous Emisar D4V2. My opinions change all the time but they look very similar, with E21a a little more yellow maybe.

Do you have a preference for one over the other? I believe a few flashaholics have wanted to know the difference between these 2 LED’s, and here they are fully exposed on the Wall of Truth Smile .


Note that E21a comes with frosted optic which makes it look dimmer.

When you replace with clear optic brightness improves but now there is a yellowish green ring in the beam.

cannga
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While we are on E21a discussion, some additional notes in case there are Emisar owners lurking here Thumbs Up Smile .

1. Emisar E21a LED is driven by CC 5 amp, versus CC 9 amp for the Emisar 219b vs 8 amp for Convoy 219b.

2. E21a is noticeably dimmer than 219b when both at Turbo level.

3. Hank uses Carlo Optic’s frosted/floody 10623 for the E21a light, but the clear/throwy 10622 for the 219b. I bought extra Carlo Optics from Hank (10621, 10622, 10623) and asked him for advice regarding trying the clear TIR optic for E21a. He said E21a version may have some slight dual tint issue with the clear optic, and if I do switch to the clear optic for E21a to make sure to press the optic a bit so that it sits closer to the MCPCB, then the beam should be fine.
The Carlo Optic site has beam shot examples if you are interested (scroll down to see pictures of beam shots from various LEDS): https://www.carclo-optics.com/products/optic-10622

4. In the 2 pictures above, one way I could tell which is which is one beam shot is more floody, that’s the Emisar with E21a and the floody TIR. The other shot if you try hard enough Smile you could faintly make out the spot in the middle of the picture, that’s the Emisar with 219b and the throwy TIR.

5. Would you be surprised if someone says the E21a LED might even use the same phosphor as 219b? (Someone did.) The pictures above seem to support this. Any expert here would like to comment on this?

cannga
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Simon Mao wrote:
Bob_McBob wrote:
Simon, what are the flux bins for the various 219B in stock? E.g. D180, D200, D220, etc.

NVSL219BT-V1

L7K0C4-sw45kD220L2R9080
L7l0C4-sw30D180L2R9080
L7K0C5-sw35D200L2R9080

Above from Convoy thread.

For those new to this like me, the number after D is the output in lumens at the rated power, which for Nichia 219b is 700mA. So for the 219b 4500k Convoy (the first line), D220 means 220 lumens at 700 mA. Higher is better. Anyone pls correct as needed.

This I assume would be the LED in my (and soon, yours Smile ) Convoy S21D.

cannga
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jon_slider wrote:
An example of the effect of white balance, compared to LED CCT…, I clipped these 3 red Hats from cannga’s excellent photos above.. . Look at the backgrounds.. See how the one on the left is the “whitest”, that is because it is closest to the 5000k White Balance used for the photo. otoh, look at the backgroud of the second pic, it looks least “white”, because it has the warmest (lowest) CCT of the 3 samples (519a 4500k have been testing around 4300K actual). next observe the differences in how Red the Hat in each photo looks.. Since the 219c on the left is a 9050 LED, it has the lowest R9 CRI, so it makes the RED color Pop less, it looks more Maroon (Brown), than the other two 9080 LEDs. Iow, the 219c has the Least Brilliant (least accurate) Red Color Rendering…

Jon, whom I didn’t know might also be a shutterbug Thumbs Up , did an excellent analysis of my pictures by cropping the red hat. Why the red hat? For those not familiar, most lights quote the “general” CRI number that shows rendering of 8 pastel colors (and not strong red), CRI 95 for example. With Nichia you often see the number 9080 for the famous 219b 4500k LED. 9080 means the general CRI is at least 90, and the red CRI (rendering of “strong” red) is at least 80. This is the best possible rating and is the reason why we sing its praise.

One of the most important/common question I’ve seen as far nutty Nichia fans are concerned, is how the new 519a compares to the legendary 219b? The crop above leaves no doubt that they are in fact very different from each other, at least in this Convoy batch of 519a. Besides the red, look at the white window screen in the background, and how golden/yellow it is with 519a, and magenta with 219b.

I think cropping (shutterbugs call this pixel peeping Innocent ) is an excellent idea. Thanks Jon; I will be doing more of it. Lastly, for a good discussion of CRI, Ra, R9 see this article https://medium.com/@yeutterg/r9-more-important-than-cri-468f0efc0d58 .

Hammerman
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Sadly the Convoy S21D is terrible ugly .

 

cannga
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Hammerman wrote:

Sadly the Convoy S21D is terrible ugly .

 

LOL let’s just say the look is “industrially functional” Innocent . I’ll write detailed impression of 219b Convoy vs Emisar later, but S21D is the brightest light in my small collection of Nichia’s and the only one that I feel is actually useful in my walk. That is, leaving “boutique,” edging towards “functional.” At 30 bucks it’s a steal, and at 30 bucks something has to give. Despite of the look, I still recommend it without reservation. It’s THE 219b light to buy and deserving backbone of any enthusiast’s light collection IMvHO.

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cannga wrote:
Jon, whom I didn’t know might also be a shutterbug Thumbs Up , did an excellent analysis of my pictures by cropping the red hat.
thanks for the kind words

I actually have no photography experience, and dont own a camera.. I just have been comparing my flashlights to each other, and taking photos of them with my iPhone (auto white balance), for several years.

Over time Ive come to realize that R9 CRI is the single most important selection criteria, for me. Followed by Tint.

Beam color comparison photos like this one:

show Tint and CCT, but they do not show CRI. (although all the lights Are high CRI R9, 9080 LEDs)

To illustrate CRI in a photo, a white wall wont work, I need to actually use the light to illuminate something with Red pigments.. If the LED does not produce Red, then things with Red pigments will not show their true colors..

here is one of my first, most dramatic comparisons of Color Rendering..

Chicken ala CRI:
.

Recently I realized that White Balance is not just about white, its also about Tint. iow, D55 uses a higher DUV than the Incandescent reference used for the BBL below 5000k.. hence the jog in the BBL at 5000k in this next image (I was comparing the Tint DUV and CCT of two different nominal 3000k LEDs)
.

btw, when I use the word Tint, I mean DUV, not CCT.. the majority of time when someone talks about “tint”, they are misusing the term to mean Color Temperature.. easily confused factors, but they are independent. To add to the confusion, photos, and our eyes, see Tint and CCT in combination, as “color”.

and as many will confirm, the colors in a photo, are not necessarily identical to the apparent colors we see with our eyes. This is one of the most confusing aspects about Tint, CCT, and CRI discussions. I dont expect photos to be identical to what I see with my eyes. My perception of color is strongly altered by the White Balance of my Brain at the time of observation..

here is a glaring example (both photos of the exact same light, but at different times of day):
.

@cannga, thank you for all your contributions.. extremely informative, and rich in detail Wink

btw, some thoughts about why the sw45k became the Gold Standard for High CRI… imo it is because it was one of the first 9080 LED to become available. Because it has very Pink Tint, I initially associated Pink Tint with High CRI.. but Ive since learned that the 519a has CRI R9 that is just as good as sw45k, but without the Pink Tint.

iow, I mistakenly ASSuMeD that Pink Tint equals High CRI.. which is not correct. It is possible to have an LED with High CRI R9, and still have no Pink Tint.. in fact, the SST-20 is a 9080 LED, but with Green Tint.. and the 519a is also a 9080 LED, but without the green and without the pink Tints…

imo, the 519a replaces LH351d, and SST-20, and even sw45k whose Pink Tint is unnecessarily low DUV.. Ive become a huge fan of 519a… though I still like tint below the BBL.. and the dedomed 519a gives me that too…

I also like warmer CCT lately, Im using lights mostly at night, whereas the sw45k was originally most useful to me as a daytime EDC. I tent to use warmer LEDs at night, and cooler LEDs during the day. The neutral Tint of 519a 4500k is arguably a “better” option during the day, than the hyper pink Tint of sw45k. I think this is partly because the Tint of 519a is closer to the Tint of daylight, than sw45k.

spoilt fer choice Wink
pause wall of words.. LOL

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Now we come to the interesting part, how does Convoy S21D Nichia 219b compare to Emisar D4V2 Nichia 219b?

**************************************************************
Convoy S21D w/ 219b sw45k
Beam & color/tint quality: Floody and bright for a Nichia light. Brightest in my small collection of Nichia’s and this plus the other Convoy S21D (with 519a) are the only ones that I feel are somewhat useful for our evening walk. That is, S21D is leaving “boutique,” edging towards “functional.”
As for color/tint, for all practical purposes it’s the same between Convoy and Emisar.
Construction & cosmetic: “Functional,” in an industrial way Innocent . One example: there is really no knurling to speak of and flashlight therefore just a tad slippery. Doesn’t feel solid like my Olight (the best among my lights) but then the cost of 1 Olight equals three (!) Convoy S21D’s so I’m not complaining.
Design & Use:
21700 battery, which means a larger body than Emisar, but still only about size of my Olight M2R and still pocket-able.
The LiitoKala 21700 battery that comes with the light shows 4877 mAh and internal resistance 52 with my Opus. I don’t know max current draw of this battery but it works fine.
No Anduril, which is a plus or minus depending on your point of view. I prefer Anduril.
No Anduril also means nutty hobbyists cannot play with settings such as thermal regulation’s max T (factory setting is 55 C per Simon), but then judging by the result, maybe we don’t need to.
Rear switch only – I prefer side switch for this type of light but again, personal preference.
Comment The Convoy at 30 bucks is an incredibly compelling flashlight. A deserving backbone for any light collection if beam quality and color are priorities. Nichia 219b sw45k LED is discontinued so who knows how long supply will last; if you’re interested I would buy it quickly. IMHO if there is one Nichia light that you should buy, it’s this one, primarily because of its lasting brightness. The give away price and 21700 battery don’t hurt either.

***************************************************************
Emisar D4V2 w/ 219b sw45k
Beam & color/tint quality: Floody with a central hotpot that is brighter than Convoy at Turbo start, but after just a couple minutes, step-downs occur and brightness begins falling behind Convoy. The useful part of the beam becomes very small and hence not much area is covered (you could see the difference between the 2 lights in the beam shot below). This is observed in a D4V2 that has been calibrated and max temp limit raised to 55.
Construction & cosmetic: This is one of the most popular lights for hobbyists for good reasons: it’s pretty, construction quality very nice, a notch above Convoy. The auxiliary lights are fun. I enjoy taking pictures of this light. This is a great gift light.
Available in 4 anodized colors, plus brass, copper, titanium material available. All very pretty. Keep in mind copper and brass are very heavy. Almost too heavy.
Design & Use:
18650 battery, which means a very nice small light that fits nicely in the hand. But, will a 21700 be coming?
Anduril 2
Side switch: One of the nicest I’ve used, clicks nicely and clearly. I have one with the raised ring around button option, and I don’t like it at all.
Comment Emisar sells 219b and E21a lights in several different CCT’s. This means you ARE going to end up with an Emisar one of these days Smile . To be at Emisar’s web site (oddly named www.intn-outdoor.com) makes me feel like a kid at a toy store Christmas time. I applaud Hank’s effort to supply us with such a dizzying array of fun lights.

Both owners, Hank of Emisar and Simon of Convoy, responded promptly to my multiple questions. Customer service is top notch for both. All above discussion is IMHO & I could be wishy washy so opinions likely will change.

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Beam shot during run-down from Turbo. Convoy 519a and 219b are brighter and the beam cover a larger area.

The lights to either left or right side (not the 2 in the middle) have a small brighter white spot at the medial edge of the beam. That’s a reflection artifact from the plastic background and not part of the beam.

cannga
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I’ve often mentioned the Nichia 219b’s remarkable ability to distinguish different colors & shades. For example, things I see on the trail: light grey vs dark grey vs brown of the barks, light green vs dark green of leaves, flowers. Every shade, every color stands out and makes me aware of how beautiful the trail is (Palos Verdes Nature Preserve).

I hope the following set of pictures from my front yard best capture this quality. It’s not the green tint of Olight’s XHP35 or Sofirn’s SST20 that I am trying to show (that we already know), it’s how that tint obliterates shades and throws a yellow-greenish blanket over everything. Note the pastel purple plant at left forefront of the picture that is captured so extremely well by the Nichia. Just looking at this front row of small plants make me realize what an offender Innocent my beloved Olight is with respect to accurate color rendition.

The flashlights are different from one another as far as being throwy or floody, and that’s why some pics are dark at the edge. Pics shot in RAW with fixed White Balance 5000k. T tried to set exposure such that central area is similar among the shots.

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Thanks for sharing these pictures. To my eye, crops clearly show 219b’s rendering “details” better.
Would love to see more pictures like these comparing 219b/519a though Wink

cannga
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Motardos wrote:
Thanks for sharing these pictures. To my eye, crops clearly show 219b’s rendering “details” better. Would love to see more pictures like these comparing 219b/519a though Wink

You’re welcome. LOL I was afraid someone is going to ask about the popular 519a. It was the one LED I didn’t do. 519a has sort of a golden glow and less magenta than other Nichia’s at same CCT. I agree it would be a very interesting comparison.

Will re-take pictures including 519a and E21a later when it’s dark (funny hobby, can’t do anything unless in the dark Smile ) .

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cannga wrote:
in the dark Smile ) .
I only take pictures during the day, thats why you can see the hosts:
.
cannga
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Motardos wrote:
Thanks for sharing these pictures. To my eye, crops clearly show 219b’s rendering “details” better. Would love to see more pictures like these comparing 219b/519a though Wink

This set of picture shows 219b at its finest. In particular, the lavender color of the plant is reproduced the closest to how it looks in real life. 219b has extremely high R9 (strong red) CRI, so to me it’s no surprise that no other LED reproduces red, lavender, etc. quite like 219b. This is its unmatched quality.

The lavender plant lost its “pop” with 519a, OTOH the bark of the tree is more true to life with 519a than with 219b. I love 519a’s more golden-brown tint because it provides a break from 219b’s very strong magenta tint, such as the bark of the tree.

SST20 has a strong greenish yellow tone that I have not noticed until I do back to back comparison with Nichia. The magenta color of the plant nearly vanishes in this picture unfortunately. To compete with 219b, SST20 needs filter help IMO.

cannga
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BTW there seems to be some “anniversary sale” that gives $7 off. If so the S21D light with Liitokala 5000 mAh battery is now ~$30. That’s about $10 less than what I paid since I bought Samsung battery. I’ve tested that Liitokala battery – no change in brightness vs my Samsung, and the capacity is close to 5000 mAh.

https://www.aliexpress.com/item/1005003966017022.html?spm=a2g0o.productl...

EDIT: This $7 discount requires min purchase around $80 US.

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