Chroma Keying is the process used in digital photography. It is used to digitally replace the background screen of the subject by any other image. With this technique you can make your subject bound buildings to buildings. You can even dwarf the subject standing in the midst of tall towns and towers. One can even make the subject climb the side of the volcano as such scenes are used by most of the movie directors in their movies. This is an advanced technique with which can convert the world of imagination into the world of reality. It is useful for professional as well as amateur photographers.

How to use this process?

This process works with any kind of camera. The digital cameras offer several features to the user. You can implement this technique with a variety of cameras. A photographer also needs Chroma key software to key the images or photographs. Another factor which you need to consider is the proper lighting in the studio while photographing your subject. You also need to choose an appropriate color cloth for the background screen of the image.

There is much state-of-art software available which can help you in keying your subject. These tools can produce high quality pictures after the process is carried out appropriately. Some tools equip the photographer to edit the image and add visual effects for perfection. Proper lighting is essential to avoid shadows falling on the subject or ‘color spill’ on the subject. Less amount of lighting can create shadows on the face or clothes of the subject. This will not produce high quality pictures when the background screen is keyed. ‘Color spill’ refers to the reflection of extra amount of light falling onto the face of the subject. This happens when you use more than the required amount of light. It is advisable to make use of two sets of light. One set can light the background and the other set can light the foreground. You can use blue or green color good quality cloth for the background. These two colors are the farthest from skin tones that is why they are often used. The subject should not wear either of these colors. All these factors can help you in creating good quality images.

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