I don’t think the 3 less CRI are visible to the naked eye
I just received a P01 with 3700k and I absolutely love the tint on this LED! it looks less yellowish than my 4500k 519A lights.
Are you able to make Opple measurement or something like this? These should be the newer batch of less rosy FFL351A.
unfortunately i dont have any device to take such measurements. I will try to take some comparison beamshots with a 4500k 519A with WB locked on a white wall
Because I’m in the mood for teardowns right now: The shot of the FFL351A 3700 K 95 CRI.
The LED chips of FFL351A and FFL350RD are not identical. They differ in various respects, including the arrangement of the individual points:
The substrate also looks different for both LEDs; different manufacturers are therefore likely. Again it is very difficult to remove the phosphor layer from the FFL351A, it is very stiff and crumbles away if pressure is applied to.
Interesting, considering the same footprint + similar (real) LES size I would have expected them to source the same chips for both. Curious.
The actual size of these chips differs slightly, but not much. Around 4 mm² seems to be some sort of de facto-standard LES size.
But these LEDs are clearly different in some aspects. Weird, indeed.
Ordering an emisar d3aa and I’ve been told pretty much the ff emitters are the way forward over the nichia 519 which I’m both used to and like. Although I just need a little nudge to confirm I’m making the right choice. Will the ffl351rd 3700k 96 cri be a good emitter choice for close to medium range edc type uses, note in this edc I would like an emphasise on throw with a not so much flood, my nichia 519a equipped D4K isn’t great for outdoors when you can only get those lumens 50ft in front of you.
A D3AA is going to be pretty floody with almost any emitter config, simply how a triple optic works. If you want more throw, you should look into a single-emitter light.
Under maximum current for all emitters, the FFL350RD throws a bit more than dedomed 519A or FFL351A, but likely not very noticeable unless you do a side-to-side test. The high Vf and masked square LES make it significantly less efficient than the 351A/519A. However, if you plan to use med/low modes most of the time, the 350RD can crank out significantly more throw at the same drive power, just because of a smaller die.
Ah even with a spot narrow optic you would recommend a single emitter reflector over triple for throw, maybe I can live it I have bigger lights I carry when I know I need distance. Maybe I should just stick with the 519 and have it dedomed, can’t remember if I read the beam isn’t as clean in optics with dedome, also is it reduced output?
519a Dedomed in my D3AA with stock optic has a very clean beam.
It is more floody than my TS10. I have not tried the Spot optic, but they are easy enough to install if you want to test it.
That one’s a perfect example just send it lol
A “spot narrow optic” is quite the misnomer. It is the spottiest among all optics in the Carclo 105** series, but objectively is still very floody.
A dedomed 519A would be a pretty good solution. The 10511 might play slightly nicer with the dedomed 519As, or you could get some weakly frosted tape for diffusion (which is what I do). The number of lumens is reduced compared to pre-dedome, but that is really a faulty comparison because lower CCTs have fewer lumens to start with. For example, a dedomed 519A 5000K is around 3600K, and thus should be compared to a 519A 3500K for output. The reduced die size upon dedoming may also increase the optical efficiency of the TIR. In short, lumens loss should not be a worry for dedomed 519A.
Just for information/clarity: the optic in your light is the 10511, which produces a very, very different beam compared to the 10507, which I assume is what “spot optic” refers to. The 10507 plays better with domed emitters, while the 10511 is better for dedomed; there are fewer artifacts.