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Thread: Flash too powderful

  1. #21

    Default Re: Flash too powderful

    If u r off cam flash with light stand, you can move your flash further back to reduce the flash power

  2. #22
    Moderator catchlights's Avatar
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    Default Re: Flash too powderful

    Quote Originally Posted by wildsoyabean View Post
    use a faster shutterspeed.
    Quote Originally Posted by bartleby View Post
    This is also what I have in mind.
    you are giving wrong answer, exposure on flash light has not to do with the shutter speed, and if set at faster than max sync speed, the shutter will not open fully to record the flash across the whole sensor.
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  3. #23

    Default Re: Flash too powderful

    Quote Originally Posted by WhipLash View Post
    Hi guys,

    Sorry if this sound stupid, but I'm new to using off-camera flash.

    I have a 430ExII with an ebay trigger on manual mode, dialed to the lowest setting it can go (1/64).

    I'm using a 17-55 at 55mm for a tight headshot. The flash is 3 ft away from the subject, with an omnibounce. Nearer = softer, right?

    Problem is, the flash is too powerful, resulting in the subject being overexposed. Since the power is already at the minimum, what can I do to lower the flash output? In ETTL mode it's really easy using flash compensation.

    Thanks, and cheers!

    To TS, your best bet is to use a diffuser. A large piece of white cloth would help to diffuse the light. You can try bouncing the light off your reflector too. HTHs

  4. #24
    Moderator catchlights's Avatar
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    Default Re: Flash too powderful

    Quote Originally Posted by WhipLash View Post
    Hi guys,

    Sorry if this sound stupid, but I'm new to using off-camera flash.

    I have a 430ExII with an ebay trigger on manual mode, dialed to the lowest setting it can go (1/64).

    I'm using a 17-55 at 55mm for a tight headshot. The flash is 3 ft away from the subject, with an omnibounce. Nearer = softer, right?

    Problem is, the flash is too powerful, resulting in the subject being overexposed. Since the power is already at the minimum, what can I do to lower the flash output? In ETTL mode it's really easy using flash compensation.

    Thanks, and cheers!
    hope you are not shooting at f2.8, and die die must shoot at f2.8, cause the simple solution is just use a smaller aperture, smaller aperture as in smaller hole, bigger number.

    another solution is get a piece of white board, aim your flash at it and let the flash bounce back on your subject, you will have much softer light and also cut down the exposure. if can't find a white board you can use a white wall also.
    Shoot to Live, Live to Shoot
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  5. #25

    Default Re: Flash too powderful

    Quote Originally Posted by catchlights View Post
    hope you are not shooting at f2.8, and die die must shoot at f2.8, cause the simple solution is just use a smaller aperture, smaller aperture as in smaller hole, bigger number.


    +1

  6. #26

    Default Re: Flash too powderful

    Quote Originally Posted by catchlights View Post
    hope you are not shooting at f2.8, and die die must shoot at f2.8, cause the simple solution is just use a smaller aperture, smaller aperture as in smaller hole, bigger number.

    another solution is get a piece of white board, aim your flash at it and let the flash bounce back on your subject, you will have much softer light and also cut down the exposure. if can't find a white board you can use a white wall also.
    If he is shooting portraiture maybe he is desiring a f2.8 sort of isolation.

    This is good practice for portraiture generally, so i really suggest placing the flash further away.

    Advantages of this is cost-free "Diffusion" (light-spreads and before more balance and softer).

    As he is using a wireless ebay trigger, the flash can be very far away, if space is not an issue. Just move if too power/not power enough .

  7. #27

    Default Re: Flash too powderful

    Quote Originally Posted by surrephoto View Post
    If he is shooting portraiture maybe he is desiring a f2.8 sort of isolation.

    This is good practice for portraiture generally, so i really suggest placing the flash further away.

    Advantages of this is cost-free "Diffusion" (light-spreads and before more balance and softer).

    As he is using a wireless ebay trigger, the flash can be very far away, if space is not an issue. Just move if too power/not power enough .
    I don't think placing the flash further back will help to diffuse the light... He need to bounce the light off something to create a bigger source of light.

  8. #28
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    Default Re: Flash too powderful

    this might sound like a crazy idea first off...

    find a thin grade paper like 70gm not tracing, a3 size or something. hang in front of your light. feel free to boost up your flash power. (obviously, this is more for if your light source is super strong...)

    important thing about diffusing lights is not just sticking it on the light, but have the light source fill the diffusing object, be it bouncing or directly thru it. just make sure not to have the light spill over the object.

  9. #29

    Default Re: Flash too powderful

    Quote Originally Posted by cutecdo View Post
    I don't think placing the flash further back will help to diffuse the light... He need to bounce the light off something to create a bigger source of light.
    Why distance to the subject will not affect the flash power??? weird

  10. #30
    Moderator catchlights's Avatar
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    Default Re: Flash too powderful

    softness of lights is related the to size of light source, not the power of light

    for instant, bigger softbox will have softer light compare to a smaller softbox at the same distance with the subject, but if you cut the distance between a smaller softbox and subject into half, you are increasing the size of the light source, so you will have much softer effect, TS kind of understand this, however, using a omnibounce, place in closer toward the subject will not have much effect, if the subject is fairly large, besides, the soft light effect of omnibounce is coming from bouncing the light in a enclose room.


    TS want to get the softer light, this is his primary goal, hence my #1 suggestion to him is increas the apperture without alterning the lighting set up.

    if he really want to get a softer light, can follow my #2 suggestion.
    Shoot to Live, Live to Shoot
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  11. #31

    Default Re: Flash too powderful

    Hey guys, thanks for the great advice.

    Let me describe my setup. I was shooting in an enclosed space with high ceilings and coloured walls (so no bounce flash), shooting at f/2,8 (yupz, you got it right I wanted the bokeh). I don't have a light stand, so I was handholding the flash off to one side at the lowest output power. This makes it difficult to move the flash back (esp with the enclosed space). ISO was 100.

    So in summary, this are my options:

    Move flash further back - difficult if in enclosed space, but applicable in most situations
    Bounce flash / reflector - possible to use reflector
    Use diffuser or softbox - don't have either. Can improvise using cloth or paper though.
    Use smaller aperture - will affect bokeh, but can add blur in PP
    Feather the light

    Thanks again for your suggestions. Got to play around with my setup more I guess.
    Last edited by WhipLash; 8th May 2009 at 10:32 AM.
    Canon 450D | Canon 17-55mm f2.8 IS USM | Canon 55-250mm f4-5.6 IS | 430EXII | Gitzo GT0541, 486RC2

  12. #32
    Moderator catchlights's Avatar
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    Default Re: Flash too powderful

    Quote Originally Posted by WhipLash View Post
    Hey guys, thanks for the great advice.

    Let me describe my setup. I was shooting in an enclosed space with high ceilings and coloured walls (so no bounce flash), shooting at f/2,8 (yupz, you got it right I wanted the bokeh). I don't have a light stand, so I was handholding the flash off to one side at the lowest output power. This makes it difficult to move the flash back (esp with the enclosed space). ISO was 100.

    So in summary, this are my options:

    Move flash further back - difficult if in enclosed space, but applicable in most situations
    Bounce flash / reflector - possible to use reflector
    Use diffuser or softbox - don't have either. Can improvise using cloth or paper though.
    Use smaller aperture - will affect bokeh, but can add blur in PP
    Feather the light

    Thanks again for your suggestions. Got to play around with my setup more I guess.
    you forgot about the option of using ND filter on lens.
    Shoot to Live, Live to Shoot
    www.benjaminloo.com | iStock portfolio

  13. #33

    Default Re: Flash too powderful

    Quote Originally Posted by WhipLash View Post
    Hey guys, thanks for the great advice.

    Let me describe my setup. I was shooting in an enclosed space with high ceilings and coloured walls (so no bounce flash), shooting at f/2,8 (yupz, you got it right I wanted the bokeh).
    If high ceiling, then there won't be much risk of light bouncing from ceiling and runing the effect you want. So i think ABBC is your best bet to get a moderately soft directional light. It can be adjusted to get the right amount of light too. What's more, it's free.

    http://www.abetterbouncecard.com/

  14. #34

    Default Re: Flash too powderful

    another diy method is to buy a balloon and put that in front of the flash. Aim the flash upwards.

  15. #35

    Default Re: Flash too powderful

    Quote Originally Posted by shojibake View Post
    another diy method is to buy a balloon and put that in front of the flash. Aim the flash upwards.
    http://www.flickr.com/groups/strobis...7603251265338/


  16. #36

    Default Re: Flash too powderful

    TS - best bet to solve your problem is to try using a bounce card, the ABBC whould be a good approach. stick a big white card or the ABBC on your flash and let the surface of the card face your subject, and the flash head facing sideway away from your subject. you may need to bump up your flash power 1 or 2 notch from 1/64
    D80/D700 18-135/17-50/14-24/24-70/70-200/70-300/50/60 SB600/900

  17. #37
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    Default Re: Flash too powderful

    one word. UMBRELLA.

  18. #38
    Senior Member zac08's Avatar
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    Default Re: Flash too powderful

    Quote Originally Posted by Dream Merchant View Post
    Why don't you try that the next time...
    Michael Lim
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  19. #39

    Default Re: Flash too powderful

    Whoops, yes I forgot I could have used an ND filter and bounce card. Thanks guys.

    And, er... the condom diffuser wouldn't work. My subject would be too busy laughing...
    Canon 450D | Canon 17-55mm f2.8 IS USM | Canon 55-250mm f4-5.6 IS | 430EXII | Gitzo GT0541, 486RC2

  20. #40
    Senior Member zac08's Avatar
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    Default Re: Flash too powderful

    Quote Originally Posted by WhipLash View Post
    Whoops, yes I forgot I could have used an ND filter and bounce card. Thanks guys.

    And, er... the condom diffuser wouldn't work. My subject would be too busy laughing...
    Good for the candid shots...
    Michael Lim
    My Flickr Site

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