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  • My pictures show the differences between similar lights against the same target, at the same distance and with the same ambient light. The camera is the perfect tool for comparisons.

    How elaborate measuring systems can help the layman evaluate his light?


    Black Bear
    BUILDER OF THE BOREALIS FLASHLIGHT
    www.BlackBearFlashlights.com

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    • Do you have hear about the POLARION HELIOS HID light, that have 5,200 lumens and run for 60 minutes and cost only $2,395 ?

      You can read all about the Polarion and the other most powerful lights, in this blog.

      http://www.jamesmaurer.com/worlds-br...flashlight.asp

      Cheers
      Black Bear
      BUILDER OF THE BOREALIS FLASHLIGHT
      www.BlackBearFlashlights.com

      Comment


      • Originally posted by black bear View Post
        My pictures show the differences between similar lights against the same target, at the same distance and with the same ambient light. The camera is the perfect tool for comparisons.
        For comparing one of your pictures to another one of YOUR pictures, yes...but NOT for comparing your pictures with those of many OTHERS who also publish their own comparative pictures on various forums, takenunder different conditions in their own back yards, using different targets, different distances, etc.

        How elaborate measuring systems can help the layman evaluate his light?
        The suggestion was for enthusiasts and those who work in the industry. And it's hardly "elaborate".

        Nevermind!
        "Every betrayal begins with trust." - Brian Jacques

        "I can't predict the future, but I know that it'll be very weird." - Anonymous

        "There is nothing new under the sun." - Ecclesiastes 1:9

        "History, with all its volumes vast, hath but one page." - Lord Byron

        Comment


        • Originally posted by SecTrainer View Post
          Instead of measuring light output, which is more or less bogus for the reasons you mention, why not this:

          1. Set up a standard white or gray target - e.g. 2 m sq or perhaps even larger, and maybe with concentric black rings out to the edges.

          2. Use a range of standard source-to-target distances - e.g. 20 to 50 m

          3. Establish standard ambient light conditions - e.g. total darkness, starlight, etc.

          Sort of like what they've done HERE but with the added information gleaned by a Luxmeter, please forgive the example it's outdated with a "cheesy" page design


          FWIW this "standard" would also need to lock down the camera settings as some use longer exposure times
          Last edited by Maelstrom; 03-04-2010, 05:37 PM.
          "We make a living by what we get, but we make a life by what we give" - Winston Churchill

          Comment


          • SUREFIRE WEAPON LIGHT
            RECHARGEABLE CONVERSION
            345 LUMENS

            Hi guys,
            A member of another forum has this idea of boring the inside diameter of a Surefire 6P to accept a laptop computer Li Ion battery.
            I did my own version and discover that I can get a 345 lumens lamp (LED new R-5) at close to two hours run time.

            You can mount this baby in a 5.56 mm a 50 caliber or a shotgun, it will shrug recoil no matter what caliber you shoot.
            How come?

            The heavy spring on the lamp act as a shock absorber and prevent lamp battering by the battery. And been an LED is not filament to break down.


            The special machined Surefire body is a part of the equation.
            The Lamp is a new one by Thru Nite, it is the new Cree R-5 and output and incredible 345 lumens (well more than any Surefire weapon light)

            http://www.surefire.com/M961XM07-wit...umbscrew-Mount


            This lamp is a flood/throw and is ideal to clear rooms with the AR.
            For night hunting I am changing to a 300 lumens lamp that have a better throw (different reflector treatment) so those coyotes have to watch out.

            The tail cap has a remote cable switch with pressure pad, so I can place it on the stock of my rifle or shotgun, under my thumb. Yes thumb pressure will activate the light.

            Usually this type of light uses 123’s batteries, they go fast under the power of 345 lumens, so I opted for a long run time computer battery, rechargeable, that will last you close to 2 hours of run time.

            Moreover, when I am unsure of how much battery juice is in the battery, I just pop it into the charger and you get a full charged battery, ideal if I practice much night shooting with my AR.
            You cannot do that with 123’s primary batteries unless you are willing to dump expensive half used batteries.

            Li Ion technology will provide extend use if I don’t use the light, an occasional full top charge every 5 months will keep the battery at full capacity.

            I have used a crenellated bezel up front, but I am thinking to put a flat bezel as I think the crenellated is able to catch on brush,
            I provided the light with a Weaver ring, but I am thinking to change it to some Quick detach lever mount like the Leupold style Weaver style for the AR, as I don’t want it on the rifle when hunting Whitetails during the day in the laurel tickets ( I hunt with a mini 30).
            Yes the Weaver detaches quick but I will need a coin from my pocket.
            BEAMSHOT AT 30 YARDS AT MY USUAL LOCATION
            So you can compare with any of my other beam shots from the past, I use the same camera setting for all beam shots.



            This is the Quick Detach ring that I will use in my AR; it will fit the Picatinny or the Weaver bases.



            I mounted a magazine picatinny mount in my home defense shotgun, so I will make another light for the Mossberg and I will have this one with a pressure tape curly cord switch, the curly cord have more reach than the straight 9” cable for mounting way out there under the barrel of the shotgun.

            Cheers

            Black bear







            BUILDER OF THE BOREALIS FLASHLIGHT
            www.BlackBearFlashlights.com

            Comment


            • 18650 Li-Ion cells are commonplace now many manufacturers have adopted this cell standard such as Jetbeam, EagleTac, Fenix, Olight, Tiablo, Lumapower & of course Thrunite to name but a few

              Additionally there's no shortage of modding enthusiasts/machinists willing to perform a rebore on a Surefire 6P host casing, should you not want to go that route aftermartket battery tubes are also available compatible with the Surefire series of lights

              FWIW Thrunite actually rate those drop ins @ 300Lm not 345Lm on their site, SST-50 & SST-90 LEDs are where the hype is at now following on from the success of the SSC-P7 and MC/E multi emitters
              "We make a living by what we get, but we make a life by what we give" - Winston Churchill

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