Why is the clapperboard tilted when shooting Sherlock scenes?
Netflix offers behind-the-scenes videos of the making of Sherlock on BBC. In those videos, at the start of a shot on set, the clapperboard is held level while the information is read aloud, and then the clapperboard is tipped to one side before being clapped.
I've only ever noticed clapperboards being held level (or upside down at the end of a take). What is the purpose or significance of tipping the clapperboard slightly before clapping it?
Pictures about "Why is the clapperboard tilted when shooting Sherlock scenes?"
Sources: Stack Exchange - This article follows the attribution requirements of Stack Exchange and is licensed under CC BY-SA 3.0.