"Alan Browne" <ca> wrote in message
> The mirror slaps against stops at the far end of travel. The resulting
> vibration depends on the body contruction and how it responds to that slap
> and damps the vibration over time. Every camera has a different damping
> characteristic. Further, if you mount the camera on a tripod, then it too
> becomes part of the system, may be stimumated into oscilation and add to
> the blur. (Another reason to avoid extending the centre column of the
> In the end the D70 mirror ...