Hi, I’m thinking about thrower to get the best distance possible. I’ve read few topics and green LED’s are mentioned to be best at this, especially NM1, but there is only white one.
Currently at Convoy store there are two green LEDs:
KT CULPM1.13
KP CSLPM1.F1
And my question is - which one will be better for throw?
It also have to outthrow my Wurkkos TS30S Pro.
I’ve messaged Simon and he recommended the PM1.13, but looking on datasheets the PM1.F1 have more candela and lumens. But PM1.13 has narrower spectrum and is available with buck driver (according to the website).
I’m simple man - I see more candela in similar emiter size = better throw. But maybe I’m missing something?
Also if some white emitter will be better (despite SBT 90.2 - I’ve Wurkkos TS30S Pro) I can go with it, also pencil like beam is fine for me.
Currently I’ve mess in my head - thanks a lot for help!
Pm1 is more like a green led with some CRI. If I remember correctly around 30. For a thrower, it’s a beast. You get around 2200 lumen and over 500kcd. You still see some color though.
With the other one you won’t see anything besides green. Far less useful (and if I am right less bright and less throwy).
For the l21b, the pm1.f1 should still be the best option for pure throw.
Agree with your analysis; the KP CSLPM1.F1 (P in “KP” stands for phosphor-converted, i.e., broad-spectrum green) is the one to maximize candela.
With optimal focus, you should achieve ~2150 lm (without optical losses) and ~1600m of ANSI throw, based on test results by djozz and PiercingTheDarkness.
Forget the lumen numbers. I don’t like green thrower since I could hardly see anything with it compared to a white thrower. I’m using the Getian green emitter from Convoy. It’s more of a novety toy than a tool for me. Maybe it’s just my bad eyes lol. A same host with even a SFT25r is far more useful for me.
One other thing that surprise me though, is that even with a narrow band green light, you can still see warm colors since many objects can have the fluorescent effect even from green light. So you get brightly colored red, orange and yellow object shining from a green light, which is kind of bizzare when you see it for the first time.
Personally agree–color perception is important for my use, and I’d take SFT25R over Osram green any day. If the target has green-absorbing colors (e.g., red/brown leaves/bark/soil), one would fare better with a white light that technically throws less.
In fact, the SFT25R barely throws less. Comparing tests between djozz and koef3 (with CSLPM white being the emitter tested by both and used as normalization), the SFT25R should achieve 2000lm (without optical losses), 93% that of the green osram, with around 1460m of throw.
The fluorescence is interesting, I’ve seen it with green laser on a flyer printed on hot pink/orange paper. Makes sense though, going from a more energetic to less energetic color.
don’t compare the green getian to the PM1.F1. Completly different. The PM1.F1 still renders colors, surprisingly good. So good, that if you use only that green, you won’t even really notice it after some time.
There was a big discussion on reddit about PM1 vs SFT25R. My takeaway was that i don’t believe in the numbers that are claimed for the SFT25R in a L21b until i get measurements. The LES is bigger, with the 8a driver and optical losses you should be around 1800 lm or less, depending on the bin. That’s equals the throw of the white PM1. The green one should be far ahead - and around 1400m vs at least 1600m is quite a difference in candelas!
To the naked eye, you won’t even notice the difference between white PM1 vs SFT25R other than that the beam of the SFT25R is nicer shaped.
Thanks a lot for your answers! So between two greens I’d take for sure PM1.F1 variant, but now I’m really considering SFT25R…
In this case solution is one… Buy both
*now I know why we have so many lights
I’m also generally suspicious of specs, but this beamshot does show the SFT25R out-throwing the CULPM, which itself out-throws CSLPM, all in a C8 host.
That’s true and expected from the specs after looking at them again. But the green PM1 is brighter than the white PM1 and brighter than the SFT-25R, while the LES is smaller than that of the SFT-25R.
So for throw and for overall output
PM1 green >> Sft-25r > PM1 white
Edit: rewatched the video. The difference is negligible, as I wrote in my last post. The beam is much nicer though. That corona of the PM1 is so annoying…
