When the RED is synced to an external timecode, does the shutter open at the beginning of each frame? For example:
If you're running 24fps, then each frame lasts 1/24 of a second. So, if you're at timecode 01:00:00:01, then only 1/2 of the period of time at this frame is being exposed (given a shutter of 1/48). Does this exposure occur during the first half of this frame or the second half?