In chroma key technique, lighting is the most important aspect to consider for bringing realism to the videos. The technique is simple to apply, but the lighting is tricky.
When lighting some scene in chroma key technique, there are some points which are needed to be kept in mind. Firstly, light will reflect back the screen color (green, blue or any other) on the actor. So, move the actor far from the screen as much as possible. Secondly, light the background evenly. For this, use lighting kit which offers diffused and even light. There should not be any hotspots or shadows on the screen.
The above points help you to create a clean chroma key, but this is only half of the total effort required. Another issue is to make the scene look real. For this, you need to carefully study the digital video background you have to use after removing green background. Consider these questions – Is it morning, afternoon, evening or night? Is it outdoor scene or indoor scene? What type of light is it – dark, soft or bright? What the mood of the scene is? Is the background moving? If it is moving, in which direction it moves? Is there any...