Page 2 of 2 FirstFirst 12
Results 21 to 22 of 22

Thread: 580EXII User Help

  1. #21

    Default Re: 580EXII User Help

    You'll need to understand that the flash emits a finite amount of power, and thus a finite range as defined by the inverse square law.. beyond which, even if the flash is maxed out its power, the light would simply not enough for it to register as a proper exposure..

    plus, if you are shooting above sync speed in high-speed sync territory, you'll yet again lose more light inorder for the flash to fill the frame properly..

  2. #22

    Default Re: 580EXII User Help

    Quote Originally Posted by Octarine View Post
    First question: which mode? The metering works differently, depending on the shooting mode you are in. Easy to check: take a slightly dim room, take out your cam, use Auto or P mode (flip up flash in P) and half-press the button. Note down the values. Switch to Av , dial to the same aperture value as seen in Auto or P and half-press - you will see an obvious difference. The reason is that Auto/P has a different target when metering, compared to Av mode (and also M).
    If your subject is still underexposed try a) increasing ISO (not possible in Auto) or b) using FEC to get better illumination.
    More about EOS and flash:
    I Mainly use M mode. Probably is because of my ISO cause i put it on ISO100. Will try the different setting.
    Thanks alot

Page 2 of 2 FirstFirst 12


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts