Hi all,
I just bought D1K SFT70 3000K. Brilliant flashlight and perfect for my use case.
I want to set up the highest brightness level (ceiling x/150) where there should be little to no step down at all.
Anyone could give me an advice what the level should I set up?
My temperature threshold is set to 50°.
Thanks a lot.
I don’t know about the exact numbers, but will point out that the “highest brightness level where there should be little/no stepdown” is heavily dependent on ambient temperature. During a hot summer, even medium modes can get uncomfortably warm, while during winter, turbo may be sustainable.
Hank also told me to run the flashlight on high, and after a while the brightness will step down, and those are the “highest with no step down” for that ambient temperature.
If I understand it correctly, the temperature limit regulate the “brightness” so if the ambient temperature is high, then the brightness will go only that high so it doesnt go over the limit.
So I will probably ask it another way. In the 1lumen review, it was mentioned High goes to 464 lm after 10min. Could someone maybe tell me what is the x/150 level for 500lm, 450lm, 400lm for this particular set up?
That is a well-phrased question, and I’ll defer to the experts to answer it. I will say that the reviewed light uses the SST20, which is a lot less efficient than your SFT70. If they can sustain 464lm, you can probably sustain on the order of 600.
There is probably enough variance in the driver/emitter combo (both different from reviewed light) and precision across Anduril implementations that your best bet could just be trial-and-error to figure out the right level for you. With binary search it only takes you 5 tries to get within +/-5 of the desired level out of 150, more precision or fewer tries if you already have a reasonable estimate.
Just sharing my settings here.
I’ve set the temperature limit to 50°C.
Set the floor to 15/150 → for me this is usable moonlight. 10/150 is okayish but a bit too dim for me.
Set the ceil to 75/150
Set the steps to 4: Moonlight - L - M - H
No turbo.
Ambient temperature ~20°C
Running on M is bright enough and the flashlight doesnt feel warm at all after 10m.
Running on H is pretty much only on a special case. The warmth does build up overtime I ran it about 20m, and it still feels like < 40°C.
So this is my current preferable settings.
Well if someone have the time and chance to check how many lumens is 75/150 it would be cool 
You would be lucky to see your exact same Emisar config (so many options) beeing tested by someone who makes runtimes. You will be even more lucky to find someone that tested a few custom levels in order to find the sweet spot.
That being said, you don’t need to be lucky to find this level by yourself by using a shoebox and a cell phone (old one laying around or just yours). For this goal, you don’t need to “calibrate” anything or add a baffle or make the interior white:
)Enjoy!
Thanks a lot, I’ll try to set those up and will see if I can do some tests 
Thanks a lot for the tip.
I’ve manage to build a lume box. I’m not sure if I should take a bigger box or not, but I found a cosmetic packaging with a white colored cardbox inside. So I decided to use this.
If it is important, the measurement is B x W x H: 23 x 12 x 7 cm
I “try” to seal the hole with a rest rubber matt that I have and it works pretty well. It helps even to hold the flashlight.
Hopefully the setup didnt messup the measurement that much.
I just try to run a quick test since it was late and I just want to try whether this setup even works.
Settings:
D1K SFT70 3000K
Floor: 15/150
Ceil: 75/150
No Turbo
Temp limit: 50°C
Ramping steps: 4
App: LuxMaster. I’ve decided to use an “official” app from Google Play.
My quick and dirty test result was like:
Step 1: Moonlight–> Not tested
Step 2: L → ~30 lux (5 min)
Step 3: M → ~200 lux (5 min)
Step 4: H → ~684 - 656 lux (30 min run) → The flashlight is still only lukewarm.
I will test it again next time, but I’m pretty satisfied with the settings 75/150 currently.
I just realized that I need to convert lux to lumen. Will do that next time.
----UPDATED----
Based on the quick research that I’ve done:
on Turbo:
SFT-70 3000K 95CRI 90-R9 - 1700lm OTF / 12,000cd
My device reading for this = 2437 lux.
I’ve read somewhere I could’ve calculate the ratio lm / lux and use them as a base.
1700 / 2437= 0,698
So using this factor with my result above will give me:
Step 2: L → 30 lux → ~21 lm
Step 3: M → ~200 lux → ~140 lm
Step 4: H → ~684 - 656 lux → ~477 lm - 457 lm
This has to be one of Emisar’s best lights.
I hope more lights become available with Lume X1.
Awesome !
