Match on action

Match on action is important and mistakes can usually be made during editing. If the same movement, such as someone opening a door, is filmed as a wide shot and then a close up of the hand, when the the two clips are edited together, the movement must match. If the wide shot shows the door being opened about 4cm and then it changes to the close up and the door is shut and there is the repeated movement of the door opening that 4 cm again, the viewer will pick up on it. It may add confusion but it will also look like a poor edit and the effect would be lost. This is why match on action in import. It is also the same with someone walking. If on a wide someone walks completely past the window and the camera changes to film from behind them, they must still of past that window, even if they are a few steps from completely passing it, the mistake will be noticed. When editing we must make sure that all our movement matches.    

Here, i have taken photos to demonstrate match on action. 

In the top photo i am demonstrating a medium close up of someone opening the door, the door handle is bent and the hand is loosely over it, if we then look at the second photo, the close up, the positioning of the door handle and the hand is the same. If this was in a clip, the movement would flow effortlessly with no problem and the shot would look realistic and it would be a successful edit.  

If this shot of someone reaching for the handle appeared after the one of the door handle being pushed down, then it would not be a clean edit ad it would look unnatural to the viewer.