Changing the camera mode to "frame" instead of "field", the
camera combines two interlaced fields together. You can
see the results of James waving his arms quickly, but you
can also see the result of me moving the camera while taking
the picture. This seems to suggest that, when hand-holding
the camera, you should only use single-field mode.
We turned compression from "normal" to "high" for this image, too.
However, the artifacts still look pretty bad. I'm assuming that
most of the bandwidth of JPEG coefficients went into coding the
differences between even and odd scanlines...