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Get the perfect lighting and exposure for your green screen
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One of the most exciting things in movies are the fantastical backgrounds, whether it’s of collapsing buildings or dragons flying through the sky. If you want to achieve this in your own videos, you can use a green screen. The most important thing when using a green screen is lighting it properly. If you've never had to light a green screen before, don't worry. This article will walk you through the best way to light a green screen at home. Check out the tips below to learn how to do a basic green screen lighting setup.
Steps
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Correct wrinkles, tears, or scuffs in the green screen material. These imperfections can create shadows when light is shone on the green screen and make it harder to capture a smooth and even color. [1] X Research source
- If you are using fabric and it’s wrinkled, steam or iron the fabric until it’s smooth again. If the fabric is still bunching, stretch it out more tightly to eliminate the creases.
- If you are using paint, check for areas that are chipped or scuffed and repaint them. If there are a lot of chipped or scuffed areas, you should repaint the entire surface to ensure evenness of color.
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Eliminate reflective material in the room. Items such as glasses or jewelry can bounce light around the room and make it harder to isolate one solid color for the green screen. [2] X Research source Make sure your subject isn’t wearing anything reflective and hang black drapes around the room to stop light from bouncing.Advertisement
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Make sure your camera shoots in a file format compatible with your computer. Nothing’s worse than filming an entire scene and then realizing that it can’t be exported to your computer for editing. Check your camera before you start shooting to save yourself time.
- File formats that compress your image less, such as RAW or ProRes, are larger in file size but preserve all the small details of your video file, giving you a higher-quality image. [3] X Research source
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Make sure your lights are all the same type. Different lights will have different color temperatures, resulting in an uneven color balance. [4] X Research source You should at least use identical lights to light the green screen.
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Place one light on either side of the green screen. Keep the lights a few feet away from the green screen and angle them at 45 degrees. Do not place a light directly in front of the green screen, because this will create a hotspot, or an area where light is more concentrated. [5] X Research source
- If your screen is particularly large and the lights on the side can't reach all of it, place an additional two lights at the bottom of the green screen pointing up. [6] X Research source Every green screen is different, however, so start with this basic setup and move the lights as necessary to adjust.
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Check that all areas of the green screen are lit. Take a step back and see if there are any areas that the light hasn’t reached, or where there are shadows. The key is to see one consistent color. [7] X Research source
- You can add more lights if necessary, but using too many lights increases the amount being reflected back, or spilling, onto your subject. This will make it harder to separate your subject from the green screen in editing. [8] X Research source
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Position your subject far away from the screen. This will reduce the amount of light being reflected onto them from the green screen. In general, 5 to 10 feet (1.5 to 3.0 m) is a good distance. [9] X Research source If your green screen isn’t big enough, position the subject as far away as possible.
- If your subject is standing on part of the green screen, place a differently colored mat underneath them to prevent light bouncing up at them. [10] X Research source
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Light your subject with a key light. The key light is the main light used to illuminate your subject. When placing it, consider where light will be coming from in the final scene. Place the key light accordingly, making sure that it is a few feet higher than the subject. [11] X Research source
- Do not light your green screen and subject at the same time. Light your subject separately to reduce shadows and light spilling. [12] X Research source
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Place a fill light opposite to the key light. The fill light is a weaker light used to eliminate any shadows cast by the key light. Start by placing the fill light on the other side of the key light and then adjust it until there are no shadows on your subject. [13] X Research source
- The fill light is meant to diffuse the key light, so it should be softer than the key light. Lower the intensity of the fill light, or tape a diffuser such as wax paper over the lens to soften the effect. [14] X Research source
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Place a backlight behind and to the side of the subject. The backlight will create a halo effect around the subject and separate them from the background. This will help your subject look more 3-dimensional. [15] X Research source
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Look at your camera monitor to check the exposure. Exposure is how much light the camera is taking in, or how bright the picture is. You should aim for a little less brightness than you would for a normal video to avoid capturing colors other than green. [16] X Research source
- Using a waveform monitor is more accurate than simply looking at the camera monitor. If you do not have a waveform monitor, you can download a smartphone app such as Cine Meter or Green Screener. These apps can check the evenness and exposure of your lighting. [17] X Research source
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Adjust your camera’s aperture to get the correct exposure. The aperture is the hole in your camera lens that allows light into the camera. [18] X Research source If your green screen is underexposed, or too dark, widen the aperture. If it’s too bright, narrow the aperture.
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Lower your ISO to reduce digital noise. Digital noise refers to random specks of color that can appear in your video or photo. ISO is a camera setting that brightens or darkens a picture, so higher ISOs may lead to more noise, which can make it harder to isolate a single color for your green screen. [19] X Research source
- You don’t want to lower your ISO too much, as this may underexpose your green screen. Experiment with your camera's ISO settings while making sure that it isn’t making the picture too dark.
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Add or remove lights as necessary. If adjusting your camera’s aperture and ISO is not correcting your exposure problems, try adding or removing lights to brighten or dim the green screen. If your lights are too harsh, tape a diffuser over the lens to soften the lights. [20] X Research source
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Tips
- The 3-light setup is the most basic setup to provide definition for your subject. However, if you can't or don't want to do 3-point lighting, place 2 lights on either side of your subject. Make sure they are a few feet above your subject. Adjust the lights by moving them further away from the subject until you have flat, even lighting. [21] X Research sourceThanks
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References
- ↑ https://nofilmschool.com/2016/05/heres-what-you-need-remember-when-lighting-green-screen
- ↑ https://www.videomaker.com/article/c13/18075-green-screen-lighting-mistakes-and-how-to-fix-them
- ↑ https://nofilmschool.com/2015/09/5-secrets-pulling-hollywood-level-chroma-key-besides-good-lighting
- ↑ https://www.techsmith.com/blog/get-perfect-lighting-video/
- ↑ https://www.premiumbeat.com/blog/lighting-green-screen/
- ↑ https://www.mediacollege.com/video/special-effects/green-screen/lighting.html
- ↑ https://www.mediacollege.com/video/special-effects/green-screen/lighting.html
- ↑ https://www.zacuto.com/greenscreen-tips
- ↑ https://www.videomaker.com/article/c13/18075-green-screen-lighting-mistakes-and-how-to-fix-them
- ↑ https://blog.pond5.com/4800-working-with-green-screens-production-and-post-production-techniques/
- ↑ https://blog.pond5.com/4800-working-with-green-screens-production-and-post-production-techniques/
- ↑ https://blog.pond5.com/4800-working-with-green-screens-production-and-post-production-techniques/
- ↑ https://blog.pond5.com/4800-working-with-green-screens-production-and-post-production-techniques/
- ↑ https://www.techsmith.com/blog/get-perfect-lighting-video/
- ↑ https://blog.pond5.com/4800-working-with-green-screens-production-and-post-production-techniques/
- ↑ https://nofilmschool.com/2015/09/5-secrets-pulling-hollywood-level-chroma-key-besides-good-lighting
- ↑ https://nofilmschool.com/2016/05/heres-what-you-need-remember-when-lighting-green-screen
- ↑ https://photographylife.com/what-is-aperture-in-photography
- ↑ https://photographylife.com/what-is-iso-in-photography
- ↑ https://www.premiumbeat.com/blog/lighting-green-screen/
- ↑ https://wistia.com/learn/production/down-and-dirty-lighting-kit
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