Any one familiar with it? I note that it is advertised on BLF and carried by some Chinese sellers in addition to Amazon but a search of BLF turned up nada about it. Per the Chinese seller the output looks to be quite low as it is listed as 1200 Lumens, virtually nothing for three XM-L2 emitters. The waterproof claim looks interesting as it is supposed to be waterproof to between 40 and 50 meters depth.
As a dive light I figured that it might well be optimized for run time and I note that per the description it apparently turns on the three LEDs sequentially as more output is dialed in. Seems very much like it has the same operating control and modes as the Niteye Eye30 and Eye40 lights. The magnetic ring interface looks to me to be quite practical for a dive light as easy to operate when wearing gloves. Also per the descriptions it has no strobe or SOS for haters of such functions.
The listed color temperature range I found of 5000 to 8000 degrees seems broad enough so I wonder whether this means they are buying the cheapest XM-L2 LEDs they can find or just listing the range of “cool white” XM-L2 LEDs per Cree.
I noticed the ad for this light a while ago and liked it’s unique looks. I couldn’t find much info on it either, the only thing I found was the reviews on Amazon which were all quite positive but the low 1200 lumen rating stopped me from buying.
Speaking of a diving light. My friend does some diving and he doesn’t own one yet. Last time, i saw a video he made, going into a shipwreck at Vanuatu island, being attacked by panic in a dark small room, as the diving “company” provided some lousy dive lights, pretty useless id say. So, i did some research but can’t find a decent ~2000lumens 2x18/26650 up to 100m waterproof flashlight. Does any of u have any practical experience with these kind of flashlights? The price range is ~150$ without batteries/charger. Maybe something like this http://m.gearbest.com/led-flashlights/pp_75432.html?
I bet many diving lights are overrated on diving depth. But Fenix has launched it’s first diving light: 930 Lumens; 100-meter submersible; motion control for output selection; Locked on/off twist switch. Pretty cool! I always trust Fenix.
Brighter than the Luxor skybeam as per Wikipedia that takes 315 KW to run at a electricity cost of $20 per hour for electricity and $51 per hour total operating cost, presumably for the 39 7000 watt light bulbs replacement and other regular maintenance of optics etc. Personally as an amateur astronomer it is just light pollution to me. Output is claimed to be 43.2 billion candela.
Hardly portable and the power source (Hoover Dam I presume) is not very portable either.
I’m not trying to be a dick or be hard on you cause your new but dude you better do some research. 1200lm is no problem for a single XM-L2.
Welcome to BLF, definitely definitely have a look around the forums to see exactly what is possible, the modders here are really pushing the limits of the current technology so far above what manufacturers do its pretty eye opening to new people just getting into LED’s in general thinking what they can buy in stores is anywhere near the limit of the equipment.
I have single emitter lights that do 4000Lm+ (MT-G2) and single emitter XM-L2 and XP-L lights that do 1700-1800Lm. 1200 is really no problem at all.
Having said all that I’m sure the mfg’s 1200Lm claim is total output, not per LED, but till its tested by independent folks here or at CPF who knows what it really can/can’t do. You can’t trust many chineese seller’s claims, especially not claims made on ali…
Again not trying to be hard on you but around here we’re very percise with our data, pretty technically savvy and we do know just what is and isn’t possible, showing up claiming something’s impossible cause you’ve never heard of it is a pretty good way to sound like a d-bag when your new, even if that’s not your intention at all.
I want to stress we’re as a whole very tolerant of noobs around here and and more than willing to help, you’ve just gotta be willing to learn, listen and be amazed at what people do with LED’s all the time. It’s not like some forums where there’s like 8 people that do big number mod’s, it’s something we all do, actually 1200lm from one single XM-L2 is extremely simple to do and the vast majority (99% or more) of members here have something that does that if not more as an EDC.
And finally- WELCOME TO BLF! You should post an intro.
I apologize for being new and unprofessional. But I do found CREE XLamp XM-L2 data saying “Light output: Up to 1052 lm @ 10 W, 85°C”. So, you have single emitter XM-L2 lights that do 1700-1800Lm, aren’t they gonna be extremely hot for bare hand? BTW, I’m talking about flashlight.
lol bit late with my reply to this. :bigsmile:
To achieve 1.21 Gigalumens at 251 lumens per watt, requires roughly 300,400 watts of power, or a wall the size of the Hoover Dam surface completely covered with MT-G2 emitters driven to 2900 lumens each, ( considering its 1.21 billion lumens in total. XD
I think Niagara falls can handle it. However with XM-L2 driven at 3A each you would only get 100 lumens/watt, meaning you need 1.2 MW (Can the falls handle that?)
it would require both the Canadian falls and American falls completely covered in XM-L2’s side-by-side driven to their maximum, (keep in mind Giga means “Billion” while Mega means Million.)
