As ‘Columbo’ used to say on

As ‘Columbo’ used to say on TV, ‘Just one more thing’; do not exceed, when panning or tilting, the speeds capable of being accommodated by the dreaded ‘roller-shutter’ action of CMos image-sensing systems. If you do, or find yourself pushing the envelope a bit, some roller-shutter effects may be mitigated, or eliminated altogether by software such as ‘Mercalli 4’.