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A99 PC Flash Sync Port Use and Viewfinder/Screen Display


Greg C
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When using the PC Flash sync port on my A99 to trigger an RF transmitter for studio flash in AUTO exposure mode, everything works fine.  But when the camera is in P, A, S, M, exposure modes, both the Viewfinder and LCD screen are black preventing image composition and focusing. My objective is to be able to select either Aperture or Shutter setting(s) for exposure control based on scene conditions.  Any ideas why this happens and how it can be resolved?

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