rehess wrote:
Regardless of what mode you're in, when movement is involved shutter speed is priority, not aperture. My first SLR was a Pentax ME SE which by today's standards had two modes, "M" and "Av". I would put the camera in "Av" mode, but for moving subjects I picked the aperture by the shutter speed that resulted, because DOF means nothing if it is accompanied by motion blur.
If movement is present then aperture wide open first to maximize shutter speed which can be controlled through ISO unlike film days. If there is additional DOF required the aperture still first and additional ISO for speed needed.