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Use of Broadcast Lighting for Virtual Reality

Virtual environment: a virtual environment is a 3 dimensional, spatial and synthetic world with a first-person based point of view; other variations of virtual environment include the virtual world and virtual reality. A viewer in a virtual environment usually has real time control of his/her view i.e. control on what he/she perceives as the virtual frame of the camera.

Broadcast Lighting

Lighting concepts

What is light? It is an electromagnetic radiation that travels in waves, just like sound, only faster.

The basis of lighting is the 3 point lighting method that directors of photography and their lighting crews usually use to approach lighting in a scene, this has changed with technology but still forms the backbone of lighting any scene. The importance of lighting is underlined in the designing of the virtual environment. Every light sources color depends with the color temperature that is unseen since our eyes autocorrects the color of the light by adapting to any color temperature change. The quality of any light is determined by its feel (softness or harsh), attenuation (weak or strong lighting) and color. Thus by manipulating light intensity, its direction and color, one can use lighting to deliver to the viewer/audience in a scene the desired atmosphere to enable them pragmatically interpret what they are watching.

The choice of light type to use

3dimensional software like MAYA provide virtual filmmakers with a wide range of lighting options that have varying qualities to offer the desired effects and also which can be manipulated to create real world impressions. These different light types include;
Directional lights: the parallel rays of directional lights are used to create a distant light effect e.g. sun that has coherent, parallel rays of light. Directional lights produce harsh, high intensity light quality giving an object hard edges with zero change in the shade of the surface because its parallel rays offer no light decay. This makes directional lights cheap in rendering due to the angle consistency of the light rays and decay need not be computed.

Point lights: Used to insinuate rays of light coming from a single source going outwards, point lights are used to create impressions of localized light sources like a burning candle or a light bulb. It comes with no decay and gives subtle higher shading on any surface the rays fall on.

Ambient lights: If you want to create an impression of real life reflected non directional light, ambient Lighting is what you need. Often used as a second source of light in a scene to support either a directional or spot light, ambient lights are easy to render since they come with no decay or any highlights.

To create sharper focus on an object, the spotlights cone angle qualities comes with a drop off, penumbra and light decay.

Area lights: Area lights help to give a more believable light spread than the aforementioned light types Light just like matter, occupies space thus the need for area lights are used to compute and show light size and its orientation.
Volume lights: Volume lights give an idea of any visual objects light extent, it also gives the filmmaker better control of volume color thus it offers good lighting for various object shapes(box, round, spheres etc.)


In summary, a perfect combination of different broadcast lighting techniques and equipment, skills and design, a filmmaker can create a virtual environment more realistic in nature to his audience and help give the scene a natural feel. At our work is to ensure you get all the quality broadcast lighting equipment you need and offer a wide variety to give you better choices to choose from.

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