| Author | Message | ||
     Monopix Tinkerer Username: Monopix Post Number: 62 Registered: 11-2008 Rating: N/A |
Capping, as Mikel said, is when the second curtain catches up the first one before the exposure is complete. With fast shutter speeds, the sutter is never fully open. The second curtain is released before the first one completes its travel so you end up with just a slit, formed by the two curtains, that traverses the frame. Ideally, this slit remains the same width for the whole exposure but, if the two curtains run at different speeds, the width of the slit may become less as it traverses the frame. This is called tapering. If the problem is so bad that the second curtain actually catches up the first one, then it's called capping. It's the same whichever way the shutter runs. |