Compared to my e07 219b sw45k, it seems warm and green. Compared to the d4v2 SST20 4000k, it seems similarly green but also purple. I’m suprised at how being below the bbl, it still looks green. But I like it better than the sw45k with its evil fairy pink. However, the two lights probably aren’t a good way to compare the emitters.
I THINK I see why people wanted the K version deeper in the red spectrum. But I’d rather take this greenish over the pink. I think that being warmer tones the pink down to purple.
Don’t forget that most LEDs have a bit of angular tint-shift, so in a reflector, there’ll be to some extent a fried-egg beam, with the hotspot being a different (lower-K) color than the spill. So any particular LED will probably look a bit different in flashlight A than in flashlight B.
And higher/lower currents change the LED’s spectrum, with things looking greener at lower currents, and rosying up at higher currents, etc.
To this day, I still like the plain ol’ 4C Crees (yeah, above the BBL) behind a TIR lens that mixes the colors nicely. Don’t care that it’s low-CRI or anything, it’s still a nice beam.
I also read somewhere that a reflector will raise the duv?
I maxed out a sw40 emitter by directly connecting it to two cr123 batteries. It looked soooo pretty. A darker pink than a sw45k. I have to put a handful on a FET driver now.
Reflectors use the light that comes from the sides more, which is more greenish than what comes out of the front.
It (from the sides) is also warmer tinted.
Funny though, i still have a few 219B 4000 and 4500K i bought from Virence.com, but their tint bin is tighter to the BBL (0 duv), and i wish they were the more rosy bin…
Do you have any plans for the rosy 4500K ones you dislike?
I don’t have sw45k emitters. I have six Fireflies flashlights with them. I will probably trade or sell some of them eventually, but I’m not sure if it makes sense to ship them to Europe.
I am very interested in sampling yours. There is a reddit user currently selling sw45k d220 in the r/flashlight bst thread. 2.50 each.
My KDlitker p60 hosts showed up today. The single sst20 4000k with smooth and also with orange peel reflectors look hardly green on high, less than my recently purchased d4v2 with the same emitters. That makes me wonder if Kaidomain has recently got a new batch of sst20, or is the reflector making this much of a difference in tint? The smooth reflector may have a little better tint than the orange peel one. By tint, I mean the light filling the whole room.
Both the single OP and smooth reflectors look very high quality and excel at their intended purposes.
The ROT66 and e07 with the SST 20 4000k “FA3” bin emitters showed up. They certainly won’t be replacing my SW45k’s. They are visually identical in tint at all levels to my recent D4v2 purchase; actually the D4v2 seems very green OUTSIDE, don’t know why. I can’t see any more rosiness in the Fireflies than the D4v2 at any level. I saw a post that said Fireflies previously received FB4 bin from there supplier that was stated to be FA1. I’m not sure if this means that FF has misrepresented tint bins before.
I’ve started to appreciate the SW45k at low levels, like 50-100 lumens, not enough for activities, but enough to move around and for atmosphere. I just love that purple cast in the room, and its not turned up into intense pinkness. I’ve realized that the negligible angular tint shift is one of the things that so great about a 219b.
I like the SST20 4000k FB4 in a smooth reflector. I’d like to try a better SST20 like this, but I’m not sure where to buy them.
The thread linked previously says all of those tests were done with samples from DigiKey which has a large selection of LH351D. Also when you use the nickname “dog farts” that is generally referring to 5000K only.
If you really want to go down a rabbit hole you should purchase 5000K and slice them with a razor
Now I see you are going back and forth between multiple LEDs “d###” flux bin is reference to Nichia LEDs, which you can purchase from one of our respected forum members at https://www.virence.com/
