How Does Chroma Key Editing Works?
How does this unique technique works?Chroma Key editing requires shooting of a video footage or photograph under specific conditions. A person can create these conditions easily in the studio or at home. A photographer needs a blue or green color cloth or sheet as the background screen. Mount this cloth or sheet on the wall behind the subject. Any color can work provided it does not match with the skin tone of the subject. Blue or green shades are mainly used as they do not get entangled with the human skin tone during keying purposes. The subject should not wear any color that matches with the background shade. You need two sets of lighting for properly illuminating the subject as well as the background. A lot of light can cause ˜color bleeding in which the color of the background gets reflected onto the face of the subject. If you use less light, then your picture might have shadows all over that leaves a dull appearance of the subject. Keep the subject far from the background. This is because the foreground lighting does not interfere with the background lighting. Photograph the subject and then digitally replace the background image with any appropriate computer program. These computer programs are the online tools that enable you to edit the image and add visual effects while keying. With this technique, a photographer can clone the subject and digitally create a twin. Film makers use this process for making their hero galloping with a horse across seas or climb the mountains. It is also used for preparing documentaries, portrait photography and much more. In this way, you can use the technique for constructive and fruitful purposes.