Introduction to Broadcasting – MCM 411 VU
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LESSON 30
LIGHTS IN VISUAL BROADCASTING
As we move from audio/ verbal communication, or broadcasting to non verbal or visual
broadcasting, the first thing that we encounter is the presence of light which enables a viewer
to see the objects which are part of the whole visual communication.
All visual broadcasting is also termed as a synonym to photography for it is a camera which is
the major tool to bring you this broadcast. And photography is defined as a process of taking
images on a sensitized surface with the help of light.
In this lesson we shall see a broad application of lighting arrangement at a studio which helps
in taking images and the general view on availability of light in the outdoor broadcasts.
The lights explain about the perspective, mode and textures etc.
The Nature of Light
Light is a form of energy. It is this property of light which enables it to be converted from its
natural form into other forms of energies and the electrical impulse. Likewise electrical energy
could also be converted into light as we experience this more often in our daily life.
A ray of sunlight, which seems white, is actually a composition of all shades of light blended
into one shade. The scientists have been able to split up the sunlight into hundreds and
thousands of sub colors, called primary, secondary and tertiary colors. Broadly red, green and
blue (RGB) are the colors which mixed to form all other colors.
Unlike the sound waves, light waves travel straight. This property immensely helps in forming
shadows, or to students of broadcasting, making visual communication possible.
Light Temperature
In another way we can also read shades of light by its temperature. In this case temperature is
used not a measurement of heat but a degree of lights on the spectrum where we distinguish
one shade from another. The orange tinge of light is read at 3200 Kelvin and the blue at 5600
Kelvin, The orange light is supposed to be the best in reading the color of human skin. It is
common practice to shoot outdoor when sun is ascending or descending simply because at
these times of the day, orange-tinge of light is amply available to get true colors of the objects.
These days different lights have made it possible to take a true image of an object under
different lighting arrangements.
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