Recommendation for flash please

Discussion in '35mm Cameras' started by Douglas MacDonald, Feb 23, 2004.

  1. Can someone with experience at flash photography please offer a
    recommendation for an off camera, (non Canon preferred) flash to use with a
    10D. I currently have a Sigma EF500 Super and it works as a zoom flash quite
    the wrong way for a digital camera with 1.6 factor to add on to the lens
    length. 80% of the time the overshoot is quite OK but I would like much more
    control over the thing than either this Sigma or the Canon equivalent
    *seems* to permit.

    What I am trying to achieve is localised flash. I don't want the whole frame
    lit, just the central portion with fall off light to the rest of the frame..
    I want to achieve this with the off camera cable I have which effectively
    moves the flash away from the camera while still providing ttl metering. If
    you can imagine a subject in centre frame, lit by flash from 3 feet left of
    the camera and the rest of the frame so under exposed as to be irrelevant to
    the scene. This is the goal.

    Douglas
    ----------------
     
    Douglas MacDonald, Feb 23, 2004
    #1
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  2. Douglas MacDonald

    Bob Hickey Guest

    I'd get a Viv 283/285. Punch a hole in a black card and tape it too the
    flash lens. If that's not directional enough, tape a black cardboard tube to
    the card. If it's still not narrow enough, make a longer tube. Bob
    Hickey
     
    Bob Hickey, Feb 23, 2004
    #2
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  3. Any TTl flash should work (with spot metering, anyway) if you use a
    flash snoot. Easy enough to make a long tube with some heavier paper stock
    and rubberbands, and fit this around the flash head. Adjust the cone as
    necessary to bring the spot of light as tight as you need it. Light falloff
    at the edges is controlled by proximity of flash to subject - the farther
    back, the softer the edges.

    You *may* find you have more exposure control, though, by going with
    manual flash and calculating the camera setting. With TTL, not only do the
    metering area and the flash area have to align pretty well, but your
    subject has to be near 18% reflectance too, or you have to compensate for
    any difference.


    - Al.
     
    Al Denelsbeck, Feb 23, 2004
    #3
  4. Douglas MacDonald

    Alan Browne Guest


    As Bob and Al say, a simple snoot should do the job.

    If the spot your creat hits a light colored object, expect underexposure
    dark colored object, expect over exposure

    Such are the pains of TTL flash. The prob. above may be worse if, for
    example, the spot of light and the spot meter of the camera (if in that
    mode) are not coincident.

    If you can get a light meter, set the flash to manual, test fire it with
    the snoot and measure the light at the subject (dome towards lens) then
    adjust the flash for the aperture you'd prefer (always verifying with
    the meter), you will get a bang on exposure w/o the guess work...

    Cheers,
    Alan,
     
    Alan Browne, Feb 23, 2004
    #4
  5. Douglas MacDonald

    Bill Granger Guest

    Lumiquest has a snoot attachment for camera flashes. You could check into
    that.
     
    Bill Granger, Feb 24, 2004
    #5
  6. Douglas MacDonald

    KBob Guest

    Norman makes a telephoto reflector that is about 9 inches in diameter
    and mounts to Norman & Quantum portable flasheads that has a beamwidth
    of only about 15 degrees. It will punch a hole in the dark that's
    pretty well defined with its polished parabolic bowl. I can take this
    to a ballpark and light up the individual players without much problem
    using a 400 W-S pack.
     
    KBob, Feb 26, 2004
    #6
  7. Douglas MacDonald

    George Guest

    If I am not mistaken, I believe the 10D only tolerates a sync voltage of
    less than 6V (so be careful in what you choose!). It sounds to me like one
    of the Metz SCA3000 series flashes (50MZ-5, 32MZ-3, 40MZ-i, 32Z-2) fitted
    with a homemade snoot (cardboard and duct tape) would do exactly what you
    want to do. The models with "MZ" in them have a zoom on the flash that MAY
    be enough localization for your purposes.

    George
     
    George, Feb 26, 2004
    #7
  8. Ah huh!
    This is just what I was looking for.
    Thanks.
    Douglas
    ----------------------------
     
    Douglas MacDonald, Feb 26, 2004
    #8
  9. Thanks George.
    I have a remote igniter that sends a signal from the camera to a flash
    holder as well as an (Canon) off camera flash adaptor. With the information
    I now have, it looks like I will use the little gizmos I've collected to
    send a signal to the flash from the camera. This way I can use pretty much
    any flash I like without endangering the camera electronics.

    A feature I sorely miss is the little 'fill flash' which would provide a
    small flash while the main flash poured in some shadow effects. I haven't
    yet found a small manual flash that is OK on the 10D. I still have a bunch
    of remote slaves and a few slave flashes I can cobble together a
    controllable lighting system with. KBob's given me the clue I need to for
    the current job but lighting a subject at a second's notice is as much of an
    art form as the old masters had with their brushes.

    Douglas.

     
    Douglas MacDonald, Feb 26, 2004
    #9
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