Shooting with more than one camera.
WHAT IT PROVIDES
Cutting between angles Coverage of events that cannot be repeated Shorter shooting time for interviews
WHAT TO MATCH ACROSS CAMERAS
Frame rate Resolution White balance Exposure, approximately
WHY MATCHING MATTERS
Mismatched cameras are obvious at every cut, and correcting afterwards is laborious.
WHAT TO DO IF CAMERAS DIFFER IN MODEL
Match settings manually, and accept that grading will be needed.
WHAT SYNCHRONISATION REQUIRES
A common reference: a clap, a flash, or timecode.
WHY A CLAP WORKS
It produces a sharp spike visible in every audio track.
WHAT TO DO
Record it at the start of every take, on every camera.
WHAT THE CROSSING-THE-LINE RULE IS
Keeping cameras on one side of an imaginary line through the subjects.
WHY IT MATTERS
Crossing it makes people appear to swap sides, which disorients viewers.
WHAT ANGLES TO ARRANGE FOR AN INTERVIEW
A wider shot and a tighter one, from different positions.
WHY DIFFERENT POSITIONS
Two shots from the same angle cut badly.
WHAT TO CHECK ON EVERY CAMERA
That it is actually recording.
WHY
It is the most common and most costly oversight.