Green screen photography is a technique of replacing selected image by the background image in the photograph. This technique has introduced advancement in the field of photography. It has the potential to create magnetic and emphatic pictures. A photographer can present unimaginable and artistic creations with the use of this process. This type of process is useful in conveying the essence of the pictures or images. One can create wonderful and beautiful images with the use of this technique.

What is color spill and how does it occur?

A photographer should consider many factors while using green screen photography. This form of photography has simple requirements. One should learn to handle these prerequisites for effective use of photography. Proper lighting, good quality camera and high quality background cloth are the requirements. Accurate lighting is essential to create high quality images. If the lighting is not proper it can cause ‘color spill’ or dark shadows on the subject. The dark shadows occur on the subject when you use less amount of light. The ‘color spill’ occurs when larger amount of light is used to illuminate the subject. The light at the background gets reflected onto the subject. In other words, the color of the background gets reflected onto the foreground area. It causes a colored tinge on the subject and this tinge is called 'color spill'. This process takes place due to the property of the light. If you throw light on the wall or any surface it bounces back. The ‘color spill’ can be noticed in semi-transparent areas like blonde hair or glass material.

How to remove the color spill?

The color spill can be removed after taking the photograph through the digital means. While replacing the blue or green background you can use techniques and add effects to remove the color spill. However, this is a time consuming process. The easy way it to take care of the amount of light used to illuminate the subject. While photographing the subject you should deploy reasonable amount of light that is not very bright and not very less. There are other tools available that enable the photographer to edit the photograph and remove the color spill.