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  • Lumens

    Does anyone know the differance from Lumens Candlepower Foot Candles and MCD s. I am trying to figure out how to accurately figure out which flashlight is better brighter than its competetors. Quite confusing for me at least. Thanx

  • #2
    I have a hand book of reference tables that has some lumens formulas in it. No lighting engineer. I do not know exactly what you are looking for, how many of this = that, or this in comparison to that. I do not know what an "MCD" is either, except for the "golden arches".
    Paying Attention Is Not That Expensive.

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    • #3
      1 foot candle = 10.76391 meter-candles
      .

      Sir John , Earl of Bligeport & Sudspumpwater. MBE [ Motor Bike Engineer ] Nottingham England.



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      • #4
        Take the flashlights and shine them into your eye, the one that blinds you the best is the one to buy. Smitty
        Smitty.... Ride Hard, Die Fast

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        • #5
          Smitty...

          Is that what they call a "blind comparison"?
          \"But the Junkyard IS my storage area, Honey!\"

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          • #6
            Try searchin on the interney "Lumans to Candles", etc. There are plenty of those conversion engines available.

            Marv

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            • #7
              madman,

              what you ask cannot be done. on several of the message boards and newsgroups i've been on over the years this topic comes up quite frequently. the last million-reply thread on it was on the rec.guns newsgroup when guys were trying to decide which tactical flashlight to purchase.

              the problem is that a candlepower is a unit of measurement describing the light output from a point source based on an archaic standard of "one candle power". a lumen is the measurement of a light's intensity over a given area. a flashlight of 1000 candlepower will have a different lumen value depending upon how far away from the light source the measurement is taken. think of it this way, if you are 1" from a light, it is very bright, if you are 10' from it, the light cast on to a surface (the lumen value) is much less, but the candlepower of the source has not changed.

              andy b.
              The danger is not that computers will come to think like men - but that men will come to think like computers. - some guy on another forum not dedicated to machining

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              • #8
                According to my "Pocket Reference":

                To convert from candle power to lumens you multiply by 12.566

                I know this is what we use at work when we calibrate light meters.

                Hal C. , www.tempyramid.com
                No matter where you go, there you are!

                Hal C.

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                • #9
                  Hey Smitty Ill just take youre advice but Ill shine the light in someone elses eyes. II ll probably use one of the kids.

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                  • #10
                    here is the free conversion program that I use http://www.joshmadison.com/software/convert/
                    John

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