From: Tony Conrad (email suppressed)
Date: Mon Jan 14 2008 - 20:04:26 PST
The shutter angle, instead of being 180 degrees (half a circle, open
half the time, 1/50 sec.) for PAL at 25 fps, is adjusted to be a little
smaller, to capture only half of the NTSC frame, at 1/60 sec.
For info on FrameWorks, contact Pip Chodorov at <email suppressed>.