Coverage and Cut-aways

Coverage 

In film making, Coverage covers three sections, these sections are lens, camera and script. With lens, coverage means the size of the image the lens can produce. This is important because the coverage must be large enough to cover the sensor or the film used.

When looking at the camera part of coverage, it means the amount of footage which is shot and the different camera shots which a used during the making of a scene. This is important because you could make sure you get a variety of different camera shots and the more coverage of footage you get the more you have to work with and edit. 

Finally when looking at scripts, coverage is the name for evaluating and grading a screenplay. There are seven sections of the criteria that is used to do this, they are; identification, logline, comment summary, grade, synopsis, budget and analysis. This could be important because it is helpful to get feedback on screenplays, so you can edit and learn from things which didn't go so well. 

Cut-away

This is a film technique which is a filmed action, inserted with some view of something else and then it is normally followed by the cutback of the original shot. This, I wouldn't think wouldn't be too important, as it is a technique which is just chosen to do but it may be important to a film which is being shot and it may be a useful and effective technique.