Beamshot, though I don’t feel that it does justice to the Luxeon V2
Left to right: Convoy M1 with 70CRI XP-L 5000K, UltraTac A1 with 90CRI 219B (I thought 4000K but maybe not), Convoy S2 smo with Luxeon V2 70CRI 4000K, Wuben E05 with 90CRI XP-L2 80CRI.
It seems to be quite similar, but perhaps not the same. I’m anxiously awaiting proper tests. Anyone care to volunteer? Djozz? Texas Ace? Koef3? Maukka? I’d probably donate some if there’s interest.
Comparing two Convoy S2’s side by side; one with LH351D and one with Luxeon V2, the throw of the Luxeon V2 kills the LH351D. But that doesn’t take much, the LH351D is a very floody LED.
I’ve had a lux meter (UNI-T UT383BT) for about a year, but had never taken it out of it’s package until today. I tested just a couple lights before running out the door this morning, and unfortunately I didn’t have quick access to the Convoy S2 with LH351D in order to get numbers on that; hopefully I can tonight. Here’s the 3 I was able to test (so you have something to compare against in case my numbers are skewed):
Convoy C8 with 3.08A Qlite and XP-L HI V2 5000K: 2818 lux at 5m → 70,450 lux
Convoy M1 with 3.08A Qlite and XP-L V6 5000K: 755 lux at 5m → 18,875 lux
Convoy S2 (smooth reflector) with 3.08A Qlite and Luxeon V2 4000K: 549 lux at 5m → 13,725 lux
Do those numbers sound right? Since these aren’t real throwers (perhaps with the exception of the C8), should I measure at 3m (or even 1m) instead of 5m?
Without being scientific it does appear to have more throw than a LH351D but with the dome on I don’t think anyone would consider this a thrower. Not sure how it performs dedomed and I think thus far only gchart and I have even tried them in a flashlight.
I have a C8F with 3x Luxeon V and when I compare it next to a LH351D of the same type there isn’t a huge difference in the overall beam. It’s a more intense hotspot but not by a huge amount.
If I’ve got time tonight I’ll try getting side-by-side numbers with the same flashlight setup using Luxeon V2, LH351D, XP-L, and XP-L2. I’ll see what else I can scare up, maybe a XP-G2, XP-G3, SST-20, XP-L HI. I’m pretty sure I’ve got all of those on hand, it’s just how much time I’ve got to swap in and out a bunch of different LEDs.
Here’s a mechanical comparison of the domes of the SST-20 and Luxeon V2. SST-20 is quite a bit smaller in all dimensions and LH351D is slightly larger in all dimensions.
Ok… here’s some data points. I can’t say that these will be consistent with what others may gather, but they should provide a fair comparison against each other since they all came from the same flashlight, same battery, same physical measuring setup, etc.
All tests were done with a Convoy S2 (not S2+) with a smooth reflector, 3.08A Qlite driver, and a freshly charged Samsung 30Q: