This page is an entry in the Key.
Blur that is NOT disqualified by Q7:
1. Motion blur caused by movement of the subject and camera in relation to each other
See also the guide to panning and camera shake
2. Optically generated blur — that is, any softness of the rendering that is caused by lens/aperture/focus choices, including focus/bokeh blur
Blur that IS disqualified by Q7:
3. All varieties of pre-shutter blur that are not caused by #1 or #2 above. This includes blur caused by accessories mounted on the front of the lens and blur caused by zooming the lens during the exposure
See also the brief on def|pen.