Emisar D18

[Tixx]

Finally got the beamshot video done. Late night last night. here you go....

Thanks for the video! What LED did you get?

 

[torchsarecool]

No problem, I enjoyed making it (although you do feel a little conspicuous walking around parks in the dark with a searchlight beaming away, lol)

mine has SST-20 4000k leds so has the reduced output of 10000 lumens. The beam is beautiful though, very easy on the eyes. I'd love to try the 6500k just to see the difference in output

 

[Fireclaw18]

My D18 arrived today. Gold color with 4000K 95 CRI SST20 (same as in the above video). the high CRI one is 10k lumens, the 5000K and 6500K versions are 14k lumens.

At 10,000 this should be my brightest light. Now just need to get home from work...:twothumbs

 

[Fireclaw18]

Tested out my 4000K high-CRI D18 last night. My initial impressions:

- blindingly bright. Much brighter than my ROT66 (219B) my Q8, or my M43.
- compact solid shape
- excellent knurling. Feels very secure in the hand... much more so than ROT66.
- excellent build quality
- excellent UI

I think Emisar did a great job with this one.

 

[torchsarecool]

Nice summary fireclaw
I don't think anything else offers the same value for money all things considered

 

[Newlumen]

Yap. I got the d18 sst20 6500k.. it is twice brighter than rot66 xpl hi.. d18 is cool.. 14000 lumen OTF.. it is pushing 10,000 to 11,000 lumen when the 18650 were 3.7v.. couldnt ask for more. Emisar never failed on me. Great quality light!

 

[mortuus]

but it steps down kinda fast from highest ? like less then 30 seconds or so ? its shame no aux leds i like it on d4s and ff e07. But u get tons of lumens for 100$, i just wish it could sustain highest for atleast like 2 minutes or something its too big drop otherwise too fast..

 

[idleprocess]

but it steps down kinda fast from highest ? like less then 30 seconds or so ? its shame no aux leds i like it on d4s and ff e07. But u get tons of lumens for 100$, i just wish it could sustain highest for atleast like 2 minutes or something its too big drop otherwise too fast..

LED thermal ruggedness has improved markedly in recent years, but unless you want a light that's the mass of a compact fire extinguisher with active cooling, stepdown is inevitable with >100W power dissipation in such a small package - this is the nature of Emisar lights.

 

[Fireclaw18]

LED thermal ruggedness has improved markedly in recent years, but unless you want a light that's the mass of a compact fire extinguisher with active cooling, stepdown is inevitable with >100W power dissipation in such a small package - this is the nature of Emisar lights.

In your right hand you hold the light with it on in Turbo.
In your left hand you hold a squirt bottle filled with water set to mist mode. Every 10 seconds or so give the heat sink fins a squirt. Evaporation should give you much extended turbo time! :duh2:

If you run out of water you could try spitting on the heat sink fins. Or licking them (though that might cause ouchy if too hot) :devil:

 

[Grinchstolelights]

In your right hand you hold the light with it on in Turbo.
In your left hand you hold a squirt bottle filled with water set to mist mode. Every 10 seconds or so give the heat sink fins a squirt. Evaporation should give you much extended turbo time! :duh2:

If you run out of water you could try spitting on the heat sink fins. Or licking them (though that might cause ouchy if too hot) :devil:

Licking is stupid. Unless you've been eating you don't have that much saliva.

Now urinating on it...

 

[Fireclaw18]

Licking is stupid. Unless you've been eating you don't have that much saliva.

Now urinating on it...

That sounds like an effective way to increase runtime.

However, before trying any of these tips I recommend you inspect and if necessary lubricate all the o-rings on the light.

 

[idleprocess]

In your right hand you hold the light with it on in Turbo.
In your left hand you hold a squirt bottle filled with water set to mist mode. Every 10 seconds or so give the heat sink fins a squirt. Evaporation should give you much extended turbo time! :duh2:

This sounds like the whole "hold the flashlight in one hand and hold the other in an airstream (or wave it around) so your blood acts as coolant" joke from ~10 years ago. Only it's markedly more likely to work.

 

[Newlumen]

but it steps down kinda fast from highest ? like less then 30 seconds or so ? its shame no aux leds i like it on d4s and ff e07. But u get tons of lumens for 100$, i just wish it could sustain highest for atleast like 2 minutes or something its too big drop otherwise too fast..

I respect your opinion.. i like this d18 without aux led. Can you point out any light around this size that can stand 2 minutes 10000 lumen ?

 

[Grinchstolelights]

This sounds like the whole "hold the flashlight in one hand and hold the other in an airstream (or wave it around) so your blood acts as coolant" joke from ~10 years ago. Only it's markedly more likely to work.

I don't get why people have to reinvent the wheel.

 

[Ares]

So I got mine in the mail yesterday! I love the 3000K tint. It's perfect.

I do have one question - has anybody else noticed it draining one cell significantly more than the other two?

The three cells are the same age, capacity, brand, and model (Sanyo NCR18650GA 3500mAh 10A).

EDIT: Nevermind, it's probably because they're flat-tops instead of button-tops. The other two may not be making good contact. I've got some button-tops ordered now.

 

[plata0190]

Some questions I didnt find on manufacturer page, nor on the review, nor by the disassembler Vynh.

- Will every step choosen by ramping mode (stepped or smooth) be saved in the 1click shortcut mode, and also will replace the previous saved one? If so, you cant use both functions (1click and stepped ramp) as you'll need to reconfigure every time the 1click mode.
- How to set the max 2000lm max current regulated output? As it isn't set in a shortcut access nor in a stepped mode, seems only reacheable in the smooth ramp. In that case when raising it up, does it pause at 2000lm by double flashing, as on other Emisar versions?
- Sensor continuosly stabilizes the current in accordance to internal temp to mantain the output close to the configured mode. Also I want to ask if thottling occurs in visible steps or "infinite" steps as on Noctigon M43?
- Uses a soft start as Noctigon M43?
- Whats the lm power on high mode (2click shortcut from off).
- What "~2000 to ~13500lm, hybrid mode" means? Output that will decrease as batts V drop, will be much less than a direct drive?

 

[Fireclaw18]

I don't know the answer to most of those questions. However:
- temp sensor ramping happens in "infinite" smooth steps like an M43. The stepping down and up appears completely smooth.
- the light starts instantly. No soft start like on an M43.

For additional questions, I suggest posting on BLF. Toykeeper is a very active poster there and posts multiple times per day. She wrote the firmware and can answer all your questions about it.

 

[idleprocess]

I find myself wishing for a more efficient LED option. The Samsung LH351D seems to be inexpensive and available in a reasonable combination of CCTs, CRI ratings, and flux bins.

 

[DogLeg]

Re: Emisar D18 Discussion

Yeah, I don't really see the purpose in the really floody high-output soda can lights. Other than fun, of course. You really only need about 500 lumens in a floody light. Anything more, and you're just making your pupils contract the same amount as the light increases. If you need to see further, a more concentrated beam makes a lot more sense.

Floody soda cans are great for lighting up the foreground when doing night landscape/sky photography.

FWIW, I have noticed that the D18 heats up faster than the M43 in turbo mode.

 

[trananh]

Some photos of Emisar D18

Features

• CNC machined from aircraft-grade aluminium

• High Efficiency optics

• Driven direct by FET, from 5A and below linear constant regulation

• Anti-reflective coated glass lens

• Unihead construction

• High lumen output and low moon output

• Ramping interface

• Electronic soft touch switch

• Beryllium-Copper springs with 45% IACS superior to stainless steel alloys used for springs with only 2% IACS.

• Temperature step-down

• Waterproof and dustproof to IP67 standard (up to 1 meter)

• Powered by a high drain 3*18650 cell (not included)

• Dimensions: 102mm(length) * 58mm(head) * 46mm(body)


OTF lumen output and candela at start-up
SST-20 6500K: 14000lm / 65,000cd

SST-20 5000K: 14000lm / 65,000cd

SST-20 4000K/3000K 95CRI: 10000lm / 45,000cd

Slightly longer than Noctigon M43 but smaller diameter. Double brightness, recessed switch but no switch light compared to the M43. A good upgrade.

Overall a very high quality flashlight with high quality component like all other Noctigon/Emisar's produtcts, full of aluminium and pure copper for low eletrical and heat resistance, super bright 14,000 lumen max. Very good value for money