Arhie Photograpy: How To Use Green Screen Background?

Friday, April 16, 2010

How To Use Green Screen Background?

Virtual green screen sets are no longer confined to the entertainment and film industry. They are used by not only the professional but amateur photographers. It is easy to create a set up anywhere and at any place. This enables you to add visual effects in the video footage or images. There are many advanced techniques and tools to produce emphatic and impressive images and films.

A photographer should take care of a few points while creating and using the green screen background technique. A photographer can add several effects while using this technique to create images and films. It is not difficult to set the studio. A person should be able to create the studio keeping certain points in mind. It is essential to keep the studio well lit. You can make use of key and fill lights in the studio to properly light the subject. A person can use key light to light up the entire studio. Fill light is used to remove the shadows appearing on the face or clothes of the subject. The back light is another kind of lighting which is used to light up the background. It is also used to separate the subject from the background screen. These three lights are called three-point lighting system. The choice of the background screen colors depends on the background photograph which you want to create. A person can either select blue or green color for the background. For instance, a photographer wants to place the subject in the midst of green fields. In this case, you should use green color background. This technique helps in masking the background of the subject accurately. Green or blue shades are commonly used as they do not match with the human skin tone and the image sensors in the camera are sensitive to these two shades. After photographing the subject you can collect the footage for the background screen. You can then digitally replace the background with an editing tool. A person can also add transitions and other visual effects in the images or video digitally. You can make the subject invisible, dwarf the subject or even make the subject climb a tall chamber or hill. This technique is commonly used in the television stations, documentaries, films, promotional videos and much more.

By: Angel Wood

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