Confused about flash

Discussion in 'Photography' started by Gazza, Mar 5, 2009.

  1. Gazza

    Gazza Guest

    Hello,

    I am new to digital photography and I am confused about flash
    settings. I have a Canon 450D.

    When I use the flash indoors on the full auto setting my pictures
    always come out fine. When I set the camera to manual setting and set
    the same apature and shutter speed the camera used on the automatic
    picture the result is not always the same and sometimes varies quite a
    lot. Why is that?

    Also say I set the camera to Tv mode and then set the shutter speed to
    1/60 the camera almost always reports that the shot is going to be
    under-exposed with the apature information flashing at 5.6. However
    when I take the shot it appears to be OK. Why is this? Why does it not
    say the the exposure will be correct? And more to the point how do I
    know if I can further increase the shutter speed if the camera is
    already reporting under exposure at 1/60? Do you see why I am
    confused?

    Any help to understand these issues would be very much appreciated.

    Many thanks in advance

    Gary
     
    Gazza, Mar 5, 2009
    #1
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  2. Gazza

    ray Guest

    Are you sure? Have you checked the EXIF data from the photo to see if
    it's what you thought it was?
     
    ray, Mar 5, 2009
    #2
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  3. Most flash output finishes within 1/1000 of a second, so that your
    shutter does not do much to affect the amount of light exposure from
    the flash. Try to take a picture of your room at night without the
    lights on. You can try increasing the shutter to 1/100, 1/200, and on
    until some 1/1000 or 1/2000 and then you will notice the picture will
    come out darker.
     
    wannabesomeonecares, Mar 5, 2009
    #3
  4. Gazza

    Gazza Guest

    All, thanks very much for your comments.

    Gary
     
    Gazza, Mar 21, 2009
    #4
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