Weird Canon XTi problem - half overexposure

Discussion in 'Photography Equipment & Products' started by wmspringer, Nov 23, 2008.

  1. wmspringer

    wmspringer TPF Noob!

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    Having a weird problem today...hopefully this is the correct forum.

    Was taking some test shots to figure out my lighting for some photos tomorrow, and I keep getting half the photo way over-exposed while the other half is correct. On testing, I find:

    1) It's always the top half of the sensor, regardless of how the camera is oriented or positioned

    2) It only happens when using the studio flash, regardless of how that flash is positioned. I don't see it if I only use my 430EX. I don't see it if I put the camera on auto.

    3) I get the same problem with several different lenses, different shutter speeds, different apertures, with or without a lens hood.

    Any ideas?
     
  2. usayit

    usayit No longer a newbie, moving up!

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    Shutter setting is over sync speed?

    With 430EX, the camera either decides to stay under sync speed or the flash goes into High sync thus you don't see the issue.
     
  3. Dao

    Dao No longer a newbie, moving up!

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    Agree with usayit. Is the shutter speed is faster than 1/200 on the shots?
     
  4. wmspringer

    wmspringer TPF Noob!

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    That's probably it; I was using 1/250 and 1/500. I'm new to studio lighting, so that didn't even occur to me. Thanks!
     
  5. frXnz kafka

    frXnz kafka TPF Noob!

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    The flash and ambient were exposing the top half, and just the ambient was exposing the bottom half.
     

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