3 Easy Ways to Avoid Blue Screen Errors
Blue screen compositing, or most currently known as green screening, is a very handy method when making films or photos, but blue screen errors are still common. The process involves wrapping the entire background with blue materials to isolate the colors of the subject so that later on they can add different backgrounds in the keying process.
1. Choosing the Best Color for the Set
When choosing a cover or paint for your set, try to choose the most natural blue or green available. Colors have different configurations and choosing the wrong one will definitely take a lot of editing time out of your project. A green that is so light can be over-exposed when subjected to the lights and may end up as white, and therefore would be impossible to key out. If it’s too dark, it might be too similar to the darker aspects of the subject like the hair, the eyebrows or some shadows, leaving ugly transparent traces on the subject.
2. Choosing the Right Materials
The material of your cover is another thing that should be considered. Using glossy or reflective material may cause uneven tones in the shot. Using textured material will cast shadows that will be visible during the editing. Using a matte material is the most ideal option.
3. Choosing the Correct Clothing
The color of your subject’s clothing should never be the same as your set. If you are going to take a video of a girl wearing a blue dress, the background in this case has to be green, as using blue will cause the blue dress to drown out in the background (leaving a transparent silhouette of where the dress used to be). You can also adjust the colors when editing the video.
There is another method where you mark each section and edit each frame, but this process would prove more tedious as well as take much more time with the editing process. The color green is much finer than the color blue. It means that green is less grainer when keyed.
When a color is grainy, it would have many “dots” of subtones within the overall green tone. This will be fished out by the editing program, along with all the other greens to be turned transparent. The problem with this is that sometimes, if the set is poorly set-up, some of the subject’s undertones will be similar to the greens or blues, so there will be little specks on the subject when the keying is complete. If you do not have the correct equipment, it is recommended that you use a green screen since green has less grains and less probability to match the colors on the subject.
Now that you have an idea of how to avoid blue screen errors, you will be able to create perfect projects.