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Thread: Flash light in terms of Lumen?

  1. #1

    Default Flash light in terms of Lumen?

    Some Surefire torch has max output of 200 Lumen.

    I am stupid and flash my Canon external flash directly on my eye in bright sunlight. I am amazed I was instantly blinded by the flash for a minute. Just wondering will the flash have this 200 lumen?

  2. #2

    Default Re: Flash light in terms of Lumen?

    so hard to do a search on google for "lumens of a flash"?
    Alpha

  3. #3
    Moderator Octarine's Avatar
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    Default Re: Flash light in terms of Lumen?

    Quote Originally Posted by Rashkae View Post
    so hard to do a search on google for "lumens of a flash"?
    Agree, since it's much more economical: it's faster to type and one gets more answers in a couple of seconds.
    EOS

  4. #4

    Default Re: Flash light in terms of Lumen?

    Quote Originally Posted by Octarine View Post
    Agree, since it's much more economical: it's faster to type and one gets more answers in a couple of seconds.
    I tried but it does not give me the answer leh

    http://www.google.com.sg/search?hl=e...meta=&aq=f&oq=

    I think is because maybe flash is not define in terms of lumen

  5. #5

    Default Re: Flash light in terms of Lumen?

    Quote Originally Posted by maisatomai View Post
    I tried but it does not give me the answer leh

    http://www.google.com.sg/search?hl=e...meta=&aq=f&oq=

    I think is because maybe flash is not define in terms of lumen
    Eh. You can't click a link? The VERY FIRST search result, the VERY FIRST LINK there tells you the formula and sample answers:

    http://www.candlepowerforums.com/vb/...d.php?t=170622
    Alpha

  6. #6

    Default Re: Flash light in terms of Lumen?

    PS, never read it properly. Btw, I realised it is much more than a normal tactical torch. No wonder I remained "blind" for quite a while.

  7. #7

    Default Re: Flash light in terms of Lumen?

    Quote Originally Posted by maisatomai View Post
    PS, never read it properly. Btw, I realised it is much more than a normal tactical torch. No wonder I remained "blind" for quite a while.
    Of course. Lumens are measured over time, so a torch is designed for constant output. A flash, as the name implies, is designed for maximum output over a fraction of a second.
    Alpha

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