Digital cameras are used by many irrespective of one being a professional photographer or the ones who love photography. With it even the technology, Chroma Key, is becoming a rage. But what does Chroma Key comprise? This is a process wherein either green or a blue screen is used in the background and then later on it is replaced by the image or picture that one wants to use. This is generally done in stand-alone application. The entire process has to do more than just photography. Given that you have got the shot right then it is not difficult to alter the picture the way you want. It is not just a picture that could be altered but also any given video. It could be possible that you'd find information that says the best would be to avoid green screen however the secret to photography is something else. Some tips have been mentioned here to help you regarding the same. Lighting, positioning of subject and background are key elements that have grave effects upon the final image that we see and to deal with it in a smarter way, you could amalgamate them, helping them interact with each other. Art as science, this is what the technology comprise and surely if you are a professional photographer then it remains essential that you have knowledge of some of the basics of the technicalities of photography.
Color spill- This term denotes the hue that reflects off the background or walls of the room where pictures have been taken. When placing a setup, ensure that spill is maintained at the least so that later it does not become much of a trouble. Given that you fail considering it then later it might consume longer time to get rid of that unnecessary reflection. It is absolutely vital that if the subject needs to be replaced with something else then he/she wears green color that matches the backdrop so that later the subject could be replaced with anything that you want. This is what Chroma keying is.
Positioning of subject- Try and get subject stay away from the background. Around 10 feet away would be a good deal. If there are more lights used, the farther you'd need keeping the subject. If the gap is less then there could be shadows appearing and this means that you would have to spend in more time to deal with this.