This is Lighting:

Lighting for TV and Film production is constantly evolving, in the same way that lighting for theatre is changing.

However, they are very different crafts.  Film lighting, in the early days, was about massive light sources, to provide enough light for the film cameras. When colour film was first used, the light levels had to be even higher, and the colour temperatures had to accurately match other light sources in the scene. Studio soundstages were places of huge light sources and huge amounts of heat and lighting on location was energy-intensive, expensive and unwieldy.

As technology moved on, film stocks became far more sensitive, and light levels could be reduced. Similarly, digital cameras of today are able to operate with very low light levels, and more stylised and realistic lighting is now very achievable.

Theatre lighting designers don’t worry about F-Stops and lumens, only how the lighting actually looks to the human eye. TV and Film cameras are much less forgiving, and don’t automatically adjust and recalibrate when the lighting changes (which the human eye does imperceptibly).

So lighting for camera has a higher requirement for consistency and accuracy of both light levels and light source colours. Early computerised lighting controls were developed to meet the accuracy needs of TV lighting in the 1970s. Levels had to be maintained, and be repeatable (so the lighting on day two of the shoot could be set exactly as it was on day one), and the colour temperature of the light had to be exact, so ‘daylight’ through the on-set windows matched the daylight shot on location weeks or months earlier, and would be cut together so they seemed to be a single location.

In the same way as the McCandless Method is taught as a way to light theatre, there’s a standard method for lighting for video. It’s based on three light sources, one brighter than the others, which is known as the Key Light. Others are known as Fill Light.

Light is still used for atmosphere, as well as having a more straight-forward function to provide visibility, and enough light for the cameras to be able to register the image.

 


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