Before the start of the shoot for their film The New World, director Terrence Malick and cinematographer Emmanuel Lubezki devised a series of photography rules that were to be used during filming: 

1. No artificial lights. All is shot in natural light.  
2. No crane or dolly shots, just handheld or Steadicam shots. 
3. Everything is shot in the subjective view. 
4. All shots must be ‘deep-focus shots’, that is everything (foreground and background) is visible and focused. 
5. You (the camera crew) are encouraged to go and shoot unexpected things that might happen in accident or if your instinct tells you so. 
6. Selective shots: any shot that does not have visual strength is not used.

[via]