I love my 2700K 519A dedome 
There was nothing to do, I arranged the lanterns according to the quality of light, from left to right.
219b the purest light, just the eyes rest. Further 519a DD, this is a warm shade, peach, a lover of warm will like it.
Cst 20, it seemed normal before and that it turns green only at low ones, I was wrong.
Samsung never seemed normal
I took a walk with my wife, noted that 219b 4500k is best for the eyes, as neutral as possible without blockage in other shades, if it turns pink, it is almost invisible, it is perfect. One feels lightness and purity in its light
And 519a 5700 DD turned out to be too warm, it is not bad, but when a candle is lit with warm light in the forest, the colors are not quite natural, it seems to tint them.
The third here is sst 20, green
Hmm, nice comparison shots.
Gotta say, though, I think the 519A/5700DD looks nicest.
The trees look a bit browner vs grayer. No?
In reality, they are gray, such as shows 219b, and the warm shade of 519a slightly tints everything around, but this is not bad, a matter of taste.
I still like 219b more, it is more natural and clean, here is another comparison of 219b with 351D 4000k))
I’ve been swapping a bunch of emitters lately and also comparing how optics/dc-fix/reflectors interact and thought I would add some beamshots to this thread.
The final picture is on an unstained, maple workbench.
All optics are Carclo narrow.
Sorry about the brightness differences between lights. I just snapped a couple pictures real quick.
Camera locked at 5000k white balance.
L -> R
- Sofirn SP10 519 2700K DD Reflector plus DC-Fix ~2300K DUV: –0.0001
This exact emitter had a DUV of –0.0026 w/ optic + dc-fix. It also had a DUV of –0.0026 w/ reflector without DC-Fix. - Fraz Labs Nugget 519 3500k DD Narrow optic plus DC-Fix ~2800k DUV: –0.0025
- Fraz Labs Nugget519 4500k DD Narrow optic plus DC-Fix ~3500K DUV: –0.0085
- Peak El Capitan 219b SW40 D220 Narrow optic ~3700K DUV: –0.0048
- Sofirn SP10 519 5700k DD Reflector plus DC-Fix ~4260K DUV: –0.0014
This exact emitter had a DUV of –0.0045 behind a narrow optic w/ DC-fix - Convoy T3 519 4500k w/dome Reflector plus DC-Fix 4265K DUV: 0.0045
- Sofirn SP10 219b SW45k Reflector plus DC-Fix DUV: –0.0017
this exact emitter had a DUV of –0.0065 in a stock Convoy T3
Nice group of flashlights/LEDs M.Dickie!
The 219b is not so constant in tint. I have 2 headlamps from FF, both N219b 4500k. One is a lot more pinky than the other. So IMHO it’s just a lottery until you buy intentionally a particular batch with identified duv, tint and bin.
I’m actually looking for a headlamp to use in the house. I love my Hanklights with E21A R9050 2000K so I’m going for that soft golden sunset color. Red and/or UV auxiliaries would be sweet.
I’d greatly appreciate any advice. Looking for ultra premium quality and cost isn’t an issue
My favorite headlamp is an Emisar DW4 with 219b sw45k’s and the headband from Hank for the extra $4.95. The headband is more comfortable than the Nitecore HC60 I also have. If you get the Dual Channel you can get the E21A’s on one channel and the Deep Red SST20’s on the 2nd channel.
Consider an option of dedomed 519A 2700K if you want that same golden sunset color but with 3x the output of the E21A.
Thanks bobvoeh and QReciprocity42! This light looks great.
I’m leaning toward the 519A. Do you guys think I should get the “Additional floody optic”? I’ll mostly be wearing it walking around the house at night, etc. I’m definitely getting the 18350 tube which should make it super light on my noggin!
I have not tried the extra floody optic or dedome yet, so I can’t answer that question. But my d4v2 with 519 4500k with dome on are pretty floody already. Maybe someone with more experience with the dedomes can chime in on using the floody optic?
Thank you!
Thanks! Just ordered
Hey are there advantages to dedoming 519A other than reducing color temp? I’m looking at the D4K and I love the nice ~3300K of my mixed emitter D18. I could get a 4500K dedome or a 3500K dome
the difference would be that the Domed LED will have more neutral Tint DUV, closer to the BBL,
the DeDomed LED will have Tint DUV further below the BBL, it will look more peachy tinted instead of neutral tinted
here are some of my domed, next to dedome 519a
.
starting from the left, do you like #1 or #2, or, do you like #3 or #4?
If you like LH351d better than sw45k, you will probably like 519a dome On
If you prefer sw45k, you will probably like 519a dome Off
Dedoming, for me, does 4 things, in increasing order of importance:
- Doubles the intensity. May be desirable, may be not, depends on your preference. I have 519A's running in a S2+ triple, and the extra throw from dedoming makes it much more useful to me.
- Lowers the CCT by around 20-30%. In your case, dedoming a 2700K 519A takes it down to 2200K, which is closer to what you are looking for if you want ultra warm.
- Makes the tint rosier, which is almost always desirable.
- Most importantly for me: it eliminates angular tint shift! Domed emitters are prone to having a yellow-green hotspot and purple spill, and dedoming makes the beam color much more uniform. In my opinion, having horrible angular tint shift, with both CCT and duv varying wildly in the same beam, defeats the purpose of a high CRI emitter.
This is great info thank you