Sigma EF 500 Super DG (Canon EOS mount) ?

Discussion in 'Canon' started by stigma, Jan 5, 2005.

  1. stigma

    stigma Guest

    I currently use a third-party flash (Stigma EF 500 Super) on a
    Canon Elan 7E. When I set the flash for ETTL mode (and the camera
    for 'Aperature' priority auto-exposure), the combo habitually
    overexposes pictures.

    The high-speed (FP) flash-sync is difficult to setup. (See for an

    I just learned that Sigma released an "updated" model "DG"
    Does the EF500 Super DG correct the high-speed flash-sync?
    (I'd still be using it on my Elan 7E.)
    stigma, Jan 5, 2005
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  2. stigma

    Mark B. Guest

    I've experienced some overexposure with the EF 500 Super on a D30 & 10D but
    only at close distances. It is easily remedied by putting a StoFen diffuser
    on the flash. Keep in mind that in Av mode, the camera will set the flash
    exposure to properly expose the subject while it sets the shutter speed to
    properly expose the background. So if your background is significantly
    darker, it is certainly easier to overexpose the subject.

    I do agree the high speed flash isn't easy to set up, but it does work. I
    have read the updated DG is better with exposure.

    Mark B., Jan 5, 2005
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  3. stigma

    Guest Guest

    The E-TTL system does overexpose a bit. Try dialiing in -1 of flash
    exposure compensation.

    A 420EX might serve your purposes better than another Sigma. They are
    fine bodies and work great as slave flashes, but they do have their

    Guest, Jan 7, 2005
  4. stigma

    Mark B. Guest

    There are a couple differences, of course. The Sigma is a little more
    powerful, about the same as a 550EX. It can act as a master to another
    E-TTL flash; the 420EX can only be a slave. It has full manual mode as
    well, which the 420EX doesn't. I have both the Sigma & 420EX, I use
    whichever one fits the situation better.

    Mark B., Jan 7, 2005
  5. I don't understand -- all this TTL technology and the exposure ends up
    worse than with a simple sunpack and electronic eye? Is this true?

    Dr. Joel M. Hoffman, Jan 9, 2005
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