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Thread: The mother of all LED spotlights

  1. #1

    Default The mother of all LED spotlights

    Not quite sure where to post this so please move the thread if necessary.
    I just thought I'd share something I made with the almighty CPF.
    The LED is a Cree CMA3090-0000-000Q0B0A57E
    The heatsink is an old Zalman CNPS9700-NT
    The Fresnel lens is 50CM diameter 25CM focal length (F0.5)
    The frame made by me out of extruded aluminium sections, nuts and bolts.

    The result:


    And a crop:

    The large tree in the lower half of the beam is about 500m from the light and the trees on the horizon about 1250m, measured on google earth.
    Reduced the resolution to save bandwidth
    Camera is a Canon EOS 6D with a Sigma 35mm f/1.4 Art
    The exposure is ISO12800 f/1.4 1/90 processed with DxO PhotoLab to somewhat resemble what I remember seeing


    It lights up the clouds too:

    ISO1600 f/1.4 1/60 frame from raw video captured with Magic Lantern Lossless 1:1 crop

    One last image on low clouds shining out of the upstairs window(typical British weather):

    ISO3200 f/1.6 1/60

    More pictures and info upon request.
    Last edited by CommanderLake; 02-24-2020 at 05:21 PM.

  2. #2
    Moderator
    nbp's Avatar
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    Default Re: The mother of all LED spotlights

    Very cool! Iíll move it to Homemade since you built this beast.

  3. #3
    datiLED's Avatar
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    Default Re: The mother of all LED spotlights

    Awesome. Now we need pictures of the light!
    I am currently accepting limited mod requests. Please send me a PM!

  4. #4
    Flashaholic PolarLi's Avatar
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    Default Re: The mother of all LED spotlights

    Dang, that is a nice looking spot!
    I've got lux in different area codes.

  5. #5
    Flashaholic* Bimmerboy's Avatar
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    Default Re: The mother of all LED spotlights

    That's a pretty darn good first post, Commander. Welcome to CPF, and glad you shared this beast!

    Do I have this right?... a 180 Watt LED? Wheeeee doggie!!! That Zalman has its work cut out for it, and then some... haha.
    I'm an excellent driver. Of course I don't have my underwear... I'm definitely not wearing my underwear

  6. #6

    Default Re: The mother of all LED spotlights

    Good Gosh

    Commisioner Gordan is rumored to be looking for a backup Bat signal.
    Me thinks you should apply!
    John 3:16

  7. #7
    Flashaholic boo5ted's Avatar
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    Default Re: The mother of all LED spotlights

    No pics of the light itself? I'm disappointed in you lol.
    "America has three cities, New York, San Francisco and New Orleans. Everywhere else is Cleveland."- Tennessee Williams

  8. #8

    Default Re: The mother of all LED spotlights

    Sorry guys I didn't think it would be so popular, I got straight to the photography studio as soon as I saw your posts
    Taken with a Canon EOS 6D and Sigma 85mm f/1.4 at ISO800 f/4.5 1/250 and processed with DxO PhotoLab











    Thanks for all the great feedback!

  9. #9
    Flashaholic* Bimmerboy's Avatar
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    Default Re: The mother of all LED spotlights

    That is really cool! I like how it's made from seemingly random, yet suitable materials from around the house, including the moisture barrier, and scotch tape!...lol. Some of my favorite mods come from this approach.
    Last edited by Bimmerboy; 02-23-2020 at 10:14 PM.
    I'm an excellent driver. Of course I don't have my underwear... I'm definitely not wearing my underwear

  10. #10

    Default Re: The mother of all LED spotlights

    It's so powerful, it's literally as if it was pulled out of a Batman movie!

  11. #11
    *Flashaholic* thermal guy's Avatar
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    Default Re: The mother of all LED spotlights

    How far away is that beam shot in your first 2 pictures?
    If i had one day left to live i would want to be at my workplace.Because every day is like a frickin eternity.

  12. #12

    Default Re: The mother of all LED spotlights

    Quote Originally Posted by thermal guy View Post
    How far away is that beam shot in your first 2 pictures?
    Below them 2 pictures I stated: The large tree in the lower half of the beam is about 500m from the light and the trees on the horizon about 1250m, measured on google earth.

  13. #13
    Flashaholic*
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    Default Re: The mother of all LED spotlights

    Very nice project. Thanks for sharing.
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