Lighting

Lighting can be the difference between a professional, interesting shot and a dull and rookie one. Different lighting can set specific moods, playing to the audiences sub conscious. For example, in a horror film, there is more likely to be a range of darker shades and low key lighting, in contrast a comedy is likely to use high key lighting with bright colours and a warm temperature. Below are a few examples of lighting techniques in film:

Bokeh - Blurring background light sources and focusing on a subject matter in the foreground.

Soft light - Soft pools of light on a part of an actors face.

Light tint - Different tints can be used over a light to give the scene a different look. Matrix uses a green tint in many shots to show futurism. 

Contrast - The use of silhouetting  and high contrast enhances the mood of a shot, making the actors either stand out or difficult to make out depending on what contrasts to what background.

Balancing colour temperatures - using lights of different colour in the same shot can reiterate the location, mood and atmosphere. This is put to best effect in Terminator 2 at the end scene in the steel mill. Orange and blue are used in the same shot to show molten metal and moonlight.

High key - Using brighter lighting so that the characters are easily visible, mostly used in comedies.

Low key - Using darker lighting and colours to set a mysterious and uncertain atmosphere in the shot. Mostly used in horror films.

Hot edges - This technique requires using a soft light on the front of the character (Fill light) and a stronger light on the rear (Backlight) to give the character a hot edge around their body.

Top lighting - When a light source from above shines down on the subject matter, illuminating it from above.