use or not to use flash

Discussion in 'Photography Beginners' Forum' started by cajunboy, Nov 2, 2008.

  1. cajunboy

    cajunboy TPF Noob!

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    Ok, i went out today to take some family portraits. i wanted to use 1.8 f stop, but shutter speed was to high for fill flash. This was in shade, no sunlight. well have to go up to 5.6 f stop to get shutter speed under 250, no depth and field. So i am very confused now. I thought they had to much shadow under eyes. That why i wanted fill flash. Please help.
     
  2. tsaraleksi

    tsaraleksi TPF Noob!

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    What is it that you are confused about? I don't remember if the 430ex has high-speed sync, but if not, then in bright sunlight you're going to have to stop down if you want to use fill flash.
     
  3. Brutus

    Brutus TPF Noob!

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    What's the problem with a high shutter speed?
     
  4. El2

    El2 TPF Noob!

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    High SS usually will give you a really great crisp picture. You could have lower your ISO if you have lots of light, to lower your SS.
     
  5. usayit

    usayit No longer a newbie, moving up!

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    * I do believe the 430EX has high sync. Use it (but there is a loss of flash power and increase battery consumption)
    * One option is to use a neutral density filter if you want to shoot wide open in bright daylight
    * f/1.8 is not an optimal aperture for that 50mm.
    * Of course this is an artistic decision but f/1.8 is a bit wide for portraits. Your DOF is going to be pretty shallow (on top of the previous point) and prone to missed focus and/or important parts of the subject out of focus. An aperture of f/5.6 @ 10 feet subject will result in better DOF to work with (~2.6 ft) and still have a bokeh background with a far limit of ~11.5 ft.
    * lower ISO
    * increase shutter
    * Use a reflector instead of a flash.

    btw... this statement doesn't make sense to me:
    "well have to go up to 5.6 f stop to get shutter speed under 250, no depth and field"
     
  6. Village Idiot

    Village Idiot No longer a newbie, moving up!

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    That's because you don't speak noob and don't have a grasp on generation text.

    "well I had to use an aperture of f/5.6 to get the shutter speed under 1/250s and there was no depth of field."

    430 has HSS.

    If you're shooting portraitrs, I wouldn't recommend using an aperture wider than about f/2.8 with that focal range when shooting single people. I hate picture that have people's noses in focus but their eyes are blurry.
     
  7. benhasajeep

    benhasajeep TPF Noob!

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    First to me 1.8 has a pretty shallow dof in first place. If perchance 5.6 does give you too much dof. If you can, move in a little closer. The closer you are the smaller of dof will be at same f stop. Not sure how much of the frame you were filling though.

    The suggestion for a reflector is a good one. In my original reply I just guessed you probably didn't have a reflector. They are not that expensive either. Can make one too if you dont feel thats too shade tree (pun intended :D ). Cardboard backer and aluminium foil makes a good cheap reflector.

    And again. Morning light and evening light is softer, and would slow your shutter down quite a bit for fill flash sync.
     
  8. swmocity

    swmocity TPF Noob!

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    Yea what they said...if u have the 430ex use the high sync flash
     

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