The numbers in the chart look very good!
Do you happen to have a lumen estimate for the NTG50 LEDs with the Lume X1 driver?
Lume X1 driver is 6V 6A, so, it’s about 2800lm for the 4200K before lose.
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This is the way that I tested the CCT, DUV, Ra, R9, the same host, same reflector, glass lens, same distance and angle, I’m sure the values could be a bit different if you use other host, distance, angle, optic lens type etc.
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The Cyan + Black looks awesome! I will definitely get one.
I look forward to trying this one out in a KR1 with the black bezel, clip & button!
Just ordered a DM11 with the 4200K. Super excited to get my hands on it!
I’m hoping that it can be a somewhat similar substitute for the SFT40 4000K high CRI that they made like 24 of and almost nobody got.
Anyone have Pictures of the 4200k version lighting up something like items in your pantry (potato chips, cans of corn,etc .)
Preferably with a comparison of a low cri light as well on the side?
Considering he just announced it like 12 hours ago, I don’t think anybody has hands on it yet
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Anyone able to estimate what the throw would be like in D1K or DM11? Similar to XHP50.3?
Product page description states " Noctigon NTG50 6V/12V LED" but I’ve only seen 6v discussed, I’m interested in the 12V.
is this 12v a different version or just a new 6v/12v MCPCB?
For 12V you need a different mcpcb. One like this is preferable.
Got it! Thanks! Such a shame, the 12V and 32mm MCPCB had me thinking about dropping this into my BLF GT, the XHP-35 hi is a little long in the tooth nowadays.
Edit to add, I guess if I was feeling really brave (stupid), I could Dremel the plus and minus trace, then link them on the pads on the sides 
Will the 4200k version be available on the Kr1 ? With a constant current driver and op reflector preferably
Just be careful when reflowing the LED, the solder can flow to the groove resulting in some issues.
That makes sense, although looking at range of the color measurements you shared for each CCT, it seems like trying to achieve -0.002 to -0.006 might be possible, ensuring they are still rosy, but closer to neutral than the -0.006 to -0.010 most of them measured. I understand this couldn’t happen until another batch is produced.
Just a suggestion, but if you haven’t already, you might try doing a test comparing readings in the box to readings with nothing close to the meter to see if there is a difference. It seems like light reflecting off the box possibly could affect the measurements.
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That should be a great pairing, and I would enjoy seeing beamshots if you feel like taking any when it arrives.
I think similar cd/lm to the XHP 50.3 HI, although slightly lower overall lumens due to prioritizing CRI and tint over output. The light emitting surface appears similar in size.
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Looking at the KR1 listing on Hank’s site it shows the 4200K NTG50 is an option. In the description it also says it comes with an OP reflector. AFAIK the driver will be the older boost driver, not the LumeX1.
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I like how the 1800k is less rosy than the other ones since the ultra warm cct needs to have a neutral CCT to look natural (candle light, camp fire) and cozy. 1800k that are overly rosy looks artificial and not cozy. So duv of 0.000 to 0.002 is ideal for 1800k, which is what the E17A is at. But I guess the -0.004 is still acceptable. For 2700k and above, I prefer rosy tint (duv -.003 to -0.008) is the sweet spot.
I just ordered 
Is this emitter interchangeable with XHP50 emitters such that it can be swapped into any XHP50 lights that are either 6v or 12v?