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Thread: Flashes VS Strobes

  1. #1

    Default Flashes VS Strobes

    Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output...

    How to convert Guide number to Power (watts) ???
    I am NOT a PROfessional photographer and photography is NOT my hobby

  2. #2
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    Default Re: Flashes VS Strobes

    Quote Originally Posted by Youhong View Post
    Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output...

    How to convert Guide number to Power (watts) ???
    should be somewhere in the manual or spec sheet...
    but is it necessary? use a light meter..
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  3. #3

    Default Re: Flashes VS Strobes

    Quote Originally Posted by blazer_workz View Post
    should be somewhere in the manual or spec sheet...
    but is it necessary? use a light meter..
    You buy me one light meter lor... It is useful to know the maths behind yah...

    For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe...
    Last edited by Youhong; 6th November 2007 at 11:02 AM.
    I am NOT a PROfessional photographer and photography is NOT my hobby

  4. #4

  5. #5
    Member/Tangshooter
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    Default Re: Flashes VS Strobes

    Quote Originally Posted by Youhong View Post
    You buy me one light meter lor... It is useful to know the maths behind yah...

    For example, SB-800 guide number is 38 at 35mm zoom head, I want to find out how many watts equivalent it is compared to a strobe...
    so r u a photographer turned mathematician?
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  6. #6

    Default Re: Flashes VS Strobes

    Quote Originally Posted by Youhong View Post
    Flashes use Guide number while Strobes use Power (Watts) to determine their maximum output...

    How to convert Guide number to Power (watts) ???
    There should be guide number for studio strobes too. Look in the specs sheet, you should see it there.

    Ws and guide number are measure of different things. You may not be able to convert directly.

    BC
    Last edited by Scaglietti; 6th November 2007 at 01:26 PM.

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