The main objective of a theatre presentation is to communicate the ideas, to entertain, and to educate the audience. To make the presentation successful each and every element of theatre has its own importance. So, like other elements of theatre, light play an importat role in theatre presentation. It is also one of the most important but sometimes it is under appreciated.  It is more than just being able to see the play and the actors. It is the medium through which the entire plays hinge. Lighting is critical in conveying the proper atmosphere. It is essential in setting the time and place. Basically, light is a form of energy which makes objects visible to our eyes. Stage lighting is the craft of lighting as it applies to the production of theatre and other performance arts. Modern stage lighting also includes special effects, like  lasers and fog machines. People who work on stage lighting are commonly referred to as lighting Technicians. In theatre different types of lights are there as par, Fresnel, spot etc and it has a very deep impact on the presentation. Visibility is an important aspect of the stage light. By the help of lighting the director can draw your attention towards a point where he/she wants the audience to see or to hide something from the audience. The light can reveal the presence of the actor, objects or any form on the stage. More importantly light reveals the mood of the play.  If there is tragic moment, bright or colourful will never work. The light should be sober, low intensity etc. It can be used for the effects for the presentation. The lights can be mounted in a particular direction with filters to get effects like storming, raining etc. With the help of filters, the lighting designer can enhance emotional prospectus of the presentation. Light can also be synchronized with music and enhance the presentation. Earlier, plays were presented with the help of natural light; slowly the plays went too indoors, candles were introduced. Later, technology developed and now we can see various types of lights and to control lights, dimmers are also available which controls lights on the stage. There are three point lighting adds dimension, their goal is to create the illusion of a three-dimensional subject in two-dimensional image. While you can create dimension in different ways, there’s no doubt that using light and shadow is a powerful way to accomplish this. The three points of light are - The Key Light, This is the main light used on your subject. The Fill Light, The purpose of this light is to fill in the shadows created by the light, preventing them from getting too dark. The Black Light, This is used to separate the subject from the background.