You know what? I forgot the beamshots! :person_facepalming:
Yup agree, now I just canāt stand low CRI anymore. Iāve been extremely picky for CRI and tints ever since.
Personally, AT has the looks and features I like. Efficiency and reliability are itās biggest issue which Iām trying to fix. Without the latter, itās by far one of the best at itās price class. Skillhunt is easier to mod, I agree. But it lacks features and UI AT has.
Thanks for the suggestion, hopefully a manufacturer would able to help us for a special true tint snobs EDC/headlamps product line. Iām not interested in making a group buy of special edition stuff. I prefer a user mod-able EDC that will last for many years ahead while still has the robustness of sealed OEM. And thatās what Iāve been trying. Tried to contact Fenix but got no reply yet.
While Iām just like you, an outdoor guy who knows how 300 lumens high CRI is so much better than 1000 lumens green lantern, Iām also a scientist wannabe :nerd_face: :nerd_face: . I like to tinker andā¦.I do play with unnecessary experiments. Without that idealism, I wouldnāt make those boards anyhow.
I say, let them play and experiments. Because that what makes BLF so fun.
Green? Not at all, unless thereās something wrong with my eyes. Even E21A sm505 D320 R70 (my guinea pig) is one of the best low CRI with just the right amount of slight pink. Jensen567 also confirmed this, he kept his R70 (he supposed to kill them! )
All those E21As are my collectionās best CRI and tints (well, I donāt really like the sw45k)
It is not that I see any green in the pics, my question was related to the color diagrams that you have on your site. It is great that in fact the tint is neutral.
Re the sw45k. Well, I got the 6x of them and installed one into one of my DQG Spies. And then I installed 3 (THREE) pieces of lee filters to get optimum result. These were
- main +1/2 green filter to remove the primary rosy tint
- wide ring made of ā1/2 green filter
narrow ring made of 1/2 green filter these two remove the green rim, inherent to any nichia LEDs except (domeless) N083B in a mule configuration.
and a DC fix on top of these - to smooth out the radial color variations introduced by the rings
I invented this trick with lee rings when I had to mitigate tint shift in my e1e with Tanaās SingLED light engine. The shallow reflector of the e1e made the color of the hot spot really nasty, for it collected that greenish peripheral part of the original beam.
On the other hand, domed nichias are quite good in triples when their gree periphery does not affect the resulting beam. So 3 best of the remaining 5 will go to some triple. I really appreciate the way these sw45k bring up the reds at low lumen settings
I am really and I mean realy looking forward to getting those domeless E21 LEDs
For work I still fav 5600-5700K. Outdoor 3500K. General purpose 5000K
But this new 6500K R9080 is so amazingly clean, whites are brilliant while the rest of the colors pops. Perhaps I can tolerate this one for my office space. Never liked anything above 5700K before.
OK guys, hereās the beamshots:
I used Texas_Aceās order for showing purpose here. Iām sure he doesnāt mind
With the new VR16SP4 board, cleaning the flux residue has never been easier.
Using commonly available 20mm TIR optic for Cree XML, the footprint loosely fits the holder. Although it works OK, for extreme power application this holder base has to be removed (unless you can carefully lower it down to slightly below the phosphor height). With faceted optic like this slight off focus wonāt be too noticeable but the most important thing is to prevent the opaque holder from getting burnt. At 4A and beyond the side spill was hot enough to burn the neighboring LEDs (in previous gapless prototype).
Texas_Aceās favourite CCT: 4500K. The combination of sm403 and sm503 should be close enough for his taste.
Control shot: Cloudy morning in Bali
15cm from the wall. If thereās any artifacts or weird beam shape, it should be obvious at this distance
Yes it will fit most 20mm based TIR optics. But to get the most OTF lumens, the opticsās aperture should be 7mm (the diagonal of 4,8mm x 4,8mm is ~6,7mm).
Any optics with 6mm will work OK since the dies in this quadtrix setup donāt extend all the way to the edges. The losses would be minimal since E21A has narrower emission angle than Nichia 144Ax or Cree XHP50, thanks to the reflective side barrier.
Light Blue = Cool white E21A
Orange = Warm white E21A
Red = 219C
Blue = 144AM/R
I canāt wait to try out those LEDās, I have an optic very close to the one you are showing with the dimpled surface that I plan to use. Although it doesnāt use the white base, so it should not have any issues with burning. Although I might have to glue it in place to keep it from damaging the LEDās.
I wish I could find some optics with that dimpled surface but with a 20-30 degree beam angle, right now the best I have with those dimples are 60 degrees. The dimples work fantastic at mixing the tints in my experience.
Do you think that mixing sm303, sm403, sm503, sm653 on VR16SP4 would be nice? Iād like to have something between 4000K and 5000K. Maybe 2*sm403, 2*sm503 is better idea?
Thanks for the heads up, that is what my 60 degree looks like now and it is really nice, just a little too floody for my tastes. If the 20 degree has the dimpmes that should be perfect, even the 38 degree would work.
I am thinking about using this with an XHP50.2 90CRI in my new EDC, or maybe one of the nicha 6V emitters if they are give enough output with these new mcpcbās. I forgot about that actually, PM inbound.
:person_facepalming: how could I see only 403 and 503 in your post?
Anyway, CCT mixing can be predicted by simple mathematics. But you have to put output into the equation too. In an ideal case where all the emitters have exactly the same output and forward voltage, the resulting CCT would be very close to the average number. But unfortunately in your combo, each have different output. Sm303(D200), sm403(D200), sm503(D220), sm653(D240). Average them first then use the 200:200:220:240 ratio to approximate the resulting CCT