![]() Follow these simple lighting techniques to get the best final results. Lighting your subject separately from your green screen is going to make the chroma keying process much simpler and more effective because it’s extremely difficult to pull a key from a poorly lit green screen. As a general rule, there is no quick fix for bad green screen lighting, but you can use post-production effects like Spill Suppressor in After Effects which, with enough time, can help make improvements to your final chroma key. ![]() The overall goal is to create zero-spill, however, the production process doesn’t always run smoothly, and you may be in a rush to grab those last few shots at the end of the day. This, coupled with some basic lighting techniques outlined below, will ensure that you minimize the spill on your subject. Creating this space minimizes the amount of green light bouncing off of the screen and onto the person you’re interviewing. So how do we avoid it? The first thing to do is to move your subject away from the green screen. When you begin to key out the green background, you will begin to lose the color information in your subject that contains similar gradients of green to your background. Not only is spilled green light going to make your subject have a greenish tint, but it’s also going to make the keying process much more difficult. This is a really important aspect to focus on when lighting your subject against a green screen. Green screen spill is green light that is reflecting off of your green surfaces onto your subject. Using green is an excellent starting point, but here are four more specific (and less obvious) tips for getting a professional green screen result. Technically speaking, you can use any uniform and distinct color as your background and still successfully key it out, but it can be much more difficult to do so. Green is also the furthest away from human skin tones on the color spectrum, providing a good contrast between your subject and the screen. Green is by far the most common color used for chroma keying and there is a good reason for this: the sensors on video cameras are most sensitive to the color green, and therefore it produces the cleanest key. This leaves you with a transparent background behind your subject, allowing you to layer other images, motion graphics, or backgrounds seamlessly behind them. When you record video on a bright green background, you can then use video editing software to “key out” that specific color. I’ve compiled what I feel are the four essential tips to ensure that you get a professional green screen result in all your future video production projects, and avoid having to spend endless hours in post-production correcting issues that are easily avoidable during the production stage! Read on for my top tips to getting green screens right. It also provides you with a fully controllable environment for shoots, allowing you to avoid common issues like background noise, natural lighting, and a whole host of other uncontrollable factors that go hand-in-hand with location shoots. Its versatility and the resulting post-production freedom mean that with a carefully planned green screen shoot, you can open up the door to an infinite number of editing possibilities. The limits of green screening are almost endless, and grant filmmakers on all budgets the ability to create impressive digital effects within their videos. Today’s guest post comes from Ben Hancock of Aletalk Productions, a London-based corporate video production studio. ![]()
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