One of the biggest challenges of successfully working with a green screen studio is uniformly lighting it. The screen itself needs its own lighting ; independent from your foreground subject lighting.
The key is to evenly light your screen, while avoiding the creation of shadows. You preferably desire your screen to represent a single, consistent color. Remember, because you’re trying to utilize the narrowest color range as you can, shadows broaden the range, and are a contributor to diminished effects. If you have shadows ( darker colors ), they would possibly not be picked up by the camera, and as a result ; those areas won’t get replaced. If you’re working with a low-budget setup, shadows become more difficult to stop thanks to the less expensive, less specialized materials used.
This is why it is even that much more crucial to be certain your lighting is as even as practicable, especially when working with lower budget setups. Using a minimum of two lights ( the more the better ), you should direct light inwards from either side, and from below ; tweak until you get the most even lighting. Using diffusion filters makes a big difference during this step. They greatly decrease the occurrence of shadows. Next, when you add your subject, you can spot the subject’s foreground lighting casts shadows on the screen ; you’ll need to re-adjust your screen lighting and filters for your screen colour evenness again.
When choosing a material for your green screen studio, always think about the lighting. Glossy materials yield bad results, as they reflect light and make replaced areas seem paler. At the same time, glossy materials will cast shadows, causing darker areas to not be replaced in the result. What you want to look for is a matte surface. Matte surfaces will diffuse light ; causing even lighting across the entire material, and {therefore ,} a narrower color range. That is, there will be less reflected light ; paler outcomes, aand less shadows ; non-replaced outcomes. Some of the less expensive options when beginning out are solids such as card or wood, painted green. Another option is a fabric like canvas painted or dyed green. Defects such as creases, bumps or divisions in your material are an enemy as they create shadows, and therefore imperfections in your ensuing pictures. If you choose fabric, confirm it is amply thick or dense, and doesn’t let light or its resting surface show through.
When shooting with your green screen studio, your subject is also an important factor in your lighting decision. You wish to make a price difference between your subject and your green screen. Sometimes a 2 stop difference ( greenscreen is two stops higher or lower than the subject ) between the green screen studio and the topic is preferable as a lighting difference.
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