How much light does CNTL flash "spill" into scene?

Sorry, I thought the EXIF info would take care of itself, but I'm linking to the photos in my Google+ account and I guess somewhere in that chain of connections the EXIF info gets lost.

•

The three photos I posted were taken with the A99 and Tamron 28-75 f/2.8 lens. On-board (control) flash was F43AM, remote (shown in two of the three pictures, flashing) is the F58. Camera for all three shots in my post was in manual mode: shutter 1/125, aperture f/2.8 and ISO 1600.

Some of the shots in the Google+ gallery had slightly different camera settings but nothing dramatically different.

Will