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Ferei 10 0000 lumen dive light

Discussion in 'Lights' started by EANx, Apr 19, 2019.

  1. EANx

    EANx Instructor, Scuba

  2. buddhasummer

    buddhasummer Feeling the Love ScubaBoard Supporter

    # of Dives: 1,000 - 2,499
    10,000 lumens, skeptical.
  3. Ministryofgiraffes

    Ministryofgiraffes Loggerhead Turtle

    # of Dives: 1,000 - 2,499
    Location: Toronto
    I have to say that I always have an issue with Chinese/Indian manufacturers who are trying to insinuate that they are not Chinese/Indian manufacturers....any global manufacturer who is purposefully misleading about the origin or details of their product are immediately a ‘no purchase’ for me, irrespective of their product.

    Warranty replacements/repairs alone are likely going to be a complete joke/nightmare.

    I’d be keen on you taking the risk though and reporting back :)
  4. TrimixToo

    TrimixToo Regular of the Pub

    # of Dives: 200 - 499
    Location: New York State
    I predict that someone new to bright lights will buy this one, all 10K lumens of it, then turn to look at me, hitting me square in the eyes at the 20' stop with the light and destroying my vision for several days. This will happen just as a mermaid swims by...and just as Poseidon decides to swim by to wave a brief "hello." Everyone else on the boat will be talking about these events but I'll need to have had help getting back on the boat in my state of temporary blindness and I'll have missed them both. My retinas will take weeks to heal. I'll need to take a taxi home, too. From NJ. :-(

    More seriously, there are diminishing returns in brightness. My car headlights illuminate much more of the road than I'll ever need to use to stop, including reaction time, at any speed that is sane at night in deer country and even at speeds well above that. Above a certain point, more is just more without a real benefit. The backscatter makes me turn down my light from time to time already, and it's "only" 3500 lumens. It would be interesting, academically speaking, to know whether one could make effective use of a 10K lumen light outside the realm of photographic lighting.
  5. kelemvor

    kelemvor Big Fleshy Monster ScubaBoard Supporter

    # of Dives: 200 - 499
    Location: Largo, FL USA
    Several manufacturers now do make 10,000 lumen LED chips. I've got one I bought for a project light. The chip only cost me about $30 and that was a couple years ago (yeah the project has languished). It IS possible to make a light with a 10k chip.

    That said, the high power chips tend to have a larger surface area. It would probably be difficult to create one with a spot beam (8 degrees or so). This likely is more of a 10k flood style light.

    Edit: I looked up the specs. This light uses three cree xhp70 chips. XLamp XHP70 LEDs | Cree Components Each chip is capable of 4022 lumens without being overdriven, so 12k lumens total.. less some for losses due to less than ideal reflector or maybe they're just being conservative to get more time out of the light. Personally I don't like lights with multiple LED chips, but they seem to be more and more common.

    I know exactly what you mean. My wife's car has some of those super bright lights. The end result is that we hesitate to use them and almost never use the brights. They're just too bright. I know when I've been the victim of someone on the other side of the road with bright headlights I get upset.

    This light may be made of Chinesium but at $400usd it's not cheap...err well.. it's not inexpensive.
    buddhasummer likes this.
  6. drbill

    drbill The Lorax for the Kelp Forest Scuba Legend

    # of Dives: 2,500 - 4,999
    Location: Santa Catalina Island, CA
    I shudder to think of how many marine critters will go blind
    buddhasummer likes this.
  7. Rollin Bonz

    Rollin Bonz Solo Diver

    # of Dives: 500 - 999
    Location: Georgia, the state, not the country ;-)
    After surfing through their website....


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