Combining Multiple Flashes For More Light Output Works ????

Discussion in 'Lighting and Hardware' started by plainman007, Jan 29, 2012.

  1. plainman007

    plainman007 TPF Noob!

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    Hi,

    In theory if you put 2 flashes next to each other that should double your light output right ?

    I used 4 flashes (triggered with 2.4 ghz triggers) together. All huddled together and pointing at the subject. Who was standing in the SHADE at 4.30pm sunlight. Still they hardly made any difference. Too dim. I had to blow them all to full power to get any useful output. Is this normal ? These were 4 x YN-460 IIs. Cam was at f7.1, 1/100th sec, ISO 100.

    Have any of you combined a number of flashes to combat the sun. If so id like to hear if this theory works in real life ?

    Thanks...


     
  2. MLeeK

    MLeeK TPF Noob!

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    If you are trying to overpower the sun-sounds about right!
    It's really hard to tell what you were doing without seeing the image though.
     
  3. analog.universe

    analog.universe TPF Noob!

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    Subject to light distance is significant as well. So.... how close were they? If you're trying to get the most output, they should be at the closest distance possible that gets you the coverage you want.
     
  4. plainman007

    plainman007 TPF Noob!

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    Hi,

    Yes the distance was not more than 10 feet from the subject. And that was 4 flashes together. The area the subject was standing was shaded. But there was bounced sunlight ofcourse. But i dont think bounced light qualify as equal to direct sunlight right. Still the volume of light was very weak. At full power it was ok. But my question is have any of you clubbed 2 or more flashes together to get brighter more light volume.

    Also when i mean combat the sun, i didnt mean literally overpower the sun. But just having enough light to work with at 4pm evening kind of light. But it seems 4 flashes (with 53 gn) together are too little.
     
  5. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    For such a low-power flash, yes.
     
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  6. plainman007

    plainman007 TPF Noob!

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    Oh ok. I was suspecting that. But the canon top of the line 580 ex is rated at GN 58 and this one is GN 53. Lets say its a low brightness etc. Still wont 2 (double the output) at least match up to one 580 ex ? But i was using 4 of these that too.
     
  7. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Depends on the flashes-to-subject distance. How far apart were they?
     
  8. plainman007

    plainman007 TPF Noob!

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    They were all huddled together. Maybe half an inch away from each other ? All were at 1/4 power and 10 feet from the subject who was standing in the shade. The flashes were also in the shade. Very dim lighting ensued. Then i made them all full power and the light just made up for what i wanted.
     
  9. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Ten feet? That's a tall order even for high-$ OCFs.
     
  10. plainman007

    plainman007 TPF Noob!

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    Your serious ? 4 flashes together cant deliver that power ? :(:(

    But technically 4 flashes together provides 4 x light power optically ?
     
  11. MLeeK

    MLeeK TPF Noob!

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    Yes, but they aren't high output flashes, your exposure was very narrow at 7.1, 100 and 1/100 and you are trying to out shoot the sun.

    4 candles are still pretty dim. While 4 suns are pretty bright... You're shooting with 4 candles.
     
  12. 480sparky

    480sparky Chief Free Electron Relocator Supporting Member

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    Yes. But four times what?

    If you have a low guide number to start with, four times that guide number will still be a low guide number.
     

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