"WALK LIGHT": Convoy M21B-E-F w/ GT-FC40 4500k: 300 m throwers w/ Nichia-like tint = 3 homeruns but +/- tint lottery. Comparison with beautiful Rosy LEDs in Firefly E04 and X1L. LATEST: Surprised - Simon's XHP70.3 R70 4000k with nice tint.

[cannga]

@Azirine

@cannga

Can’t say anything definitive until I actually use it but fwiw S21D w/ Nichia and the more throwy Sofirn lens still does not come close (at all) to M21B w/ GT-FC40 LED wrt overall brightness perception and throw.

In addition when you “squeeze” all output into the hotspot (for better throw) with a narrow angle TIR lens, the spill/ flood might decrease to a degree that you may not like. IOW there is a price to pay. I think this kind of beam is “unbalanced” (small bright hotspot, very little spill) but if that’s what you are looking for then it’s perfect (personal preference).

I like my thrower to have a balanced beam - some hotspot some spill, and that’s what the GT-FC lights have. It is a unique throwy LED with high CRI and great tint.

Is that with 4x219b, or is 4x519A still not as bright as FC40?

Great point/question (I did sense you were heading this way :+1: ). So if I understand you correctly… if max output of the 2 lights, S21D with four 219b’s and M21B with one GT-FC40 are similar, both around 2000 lumens (here and here), then how is it I kept saying the S21D does not come remotely close to M21B when it comes to brightness perception and throw? It would be great if S21D with narrow angled TIR equals M21B~~ that way we could just buy the S21D (Nichia 219b with throw!) and forget M21B.

I am absolutely no expert and don’t know the definitive answer but do think it has to do with the design difference, 4 LED’s with TIR (S21D) vs 1 LED with reflector (M21B), the LED itself (one is dome, the other flat), and how lab measurement translates into brightness perception of hotspot and spill. That’s the limit of my amateur-level knowledge and any expert here pls chime in as needed if you feel like it.

More importantly though, I can prove my observation: with beam shots of the two lights of an actual scene so you could see for yourself the significant brightness difference. (Pics coming.)