In a video camera there is no physical shutter, but, because there is a body of understanding about how film cameras work, we still call the electrical signal "shutter speed."
Early last November one of the nearby fraternities scored a large shipment of pumpkins at a low price. They kept them around for a
while, but by the middle of the month, they'd started to go sour and the only sensible thing to do was to fling them from the third floor balcony into the street below while one of the brothers captured the event on video for future reference. After a few pumpkins, it was obvious to them that the video was blurry, and slow-motion replay wasn't giving them the sharp, smooth images they'd hoped to see, so they knocked on my door and offered me a case of beer and some slightly wrinkled Pam Anderson posters if I could figure out what was wrong. It didn't take long to diagnose their prob…