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  1. #1
    Join Date
    Dec 2008
    Location
    Florence Alabama
    Posts
    17

    remote flash trigger/ shutter sync issues

    I believe that I'm having some timing issues with my remote flash triggers...

    The Gear:
    Sony a500
    Minolta 5200i flash
    iShoot wireless trigger system (cheap ebay triggers that i hope aren't the problem...)

    The Problem:
    The top 15-20% of the frame is dark after exposures using flash with remote triggers.

    My Hypothesis:
    I'm guessing that the cause of this is that the shutter isn't completely open when the flash fires. I've tried exposures in every flash mode with the same results.

    I'm not at all sure how to fix this issue or even exactly what is going on... any and all help would be very appreciated.

    Thanks
    Ben

  2. #2
    Join Date
    Dec 2007
    Posts
    2,562
    Sony A77
    Sony A580
    Sony A 100
    Maxxum 400si.
    Sony 18-70 Kit Lens
    Minolta AF 35-70
    Minolta AF 50 f/1.7
    Tamron 70-300 f/4-5.6 Di LD
    Tamron 60mm Macro
    Tamron 17-50 f/2.8
    Tamron 2x Converter
    Sony HVL-F42AM
    Quantaray 70-300 4.5-5.6 Macro
    Slingshot 200 Bag



    http://www.flickr.com/photos/22083244@N06/

    http://s305.photobucket.com/albums/nn219/sparkie1263/

  3. #3
    Join Date
    Nov 2008
    Location
    Monmouthshire, UK
    Posts
    2,152
    I haven't used the iShoot snipers but I do know they have a delay time of 680 microseconds.
    It doesnít sound a lot, but itís probably enough that you may not be able to use the maximum synch speed of 250th.
    Oh forget it, you probably don't have that synch on the A500.
    Still I'll leave it for others.

  4. #4
    Join Date
    Dec 2008
    Location
    Florence Alabama
    Posts
    17
    Thanks a lot guys. That makes everything much more clear. But to double check: the first and second curtains open from top to bottom correct?
    If so then I am cool with what is going on. If not then I'm still a bit in the dark...

    The illustration in the adorama video in the link provided showed the curtains traveling from the bottom of the frame to the top. If my alpha runs top to bottom, and the darkness is at the top then I just need to run a longer exposure time...

    Thanks a lot fellas!

  5. #5
    Join Date
    Dec 2007
    Posts
    1,760
    longer exposure time

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