You want to avoid shadows and hard lines that cause gradient changes in the green background. A cove (a curved corner where the wall meets the floor) will smooth out the transition from wall to floor.To show your actor/subject from head to toe, the green screen has to continue down the wall and onto the floor under their feet.Use a “coved” green screen for best results.Depending on the lens, you’ll typically want 25-30 feet depth for a full-length shot that doesn’t shoot off the edges of the background.For a full shot of your actor, you’ll need to back up the camera to allow the full figure shot plus a good separation between the subject and the green screen (usually at least 6 feet to avoid “spill”).Actors can look pale and sickly against a green background.Very small jewelry is usually okay though.Ĭlick here to learn more about InFocus Film School’s Film Production Program! glasses, large jewelry, props, etc.) will pick up the green from the screen and will also be rendered transparent. Reflective materials are also a no-no.Don’t have the subject wear or hold anything green or else the areas will be transparent once chroma-keyed. Otherwise, if let’s say your actor is wearing a bright green tie in front of a green screen, he’ll end up with a transparent strip down his chest where the tie is supposed to be! The key rule is no matching colours! The background has to be a completely different colour from the subject. You wouldn’t be able to film Kermit the Frog against a green screen-he’d disappear! In this case, you’d typically use a blue screen, the “second-in-line” colour. the actor’s clothes, eyes, hair, accessories).īut green doesn’t work for everything. A vibrant, almost neon green is the standard choice because it’s strong and usually a distinctly different colour from anything on the subject (e.g. Technically, you can use any colour background. When used with more sophisticated 3D techniques, this process can add any new element (smoke, fire, rain, etc.) to complex moving shots. This lets the other image to show through. The chroma key singles out the selected colour (usually the green) and digitally removes it by rendering it transparent.two images or video streams are layered together) into the shot. The new background is composited (i.e.When a background isn’t available-like a fictional, alien, historic, futuristic or even just hard-to-access location-green screen comes to the rescue!Īfter the footage is shot, the compositors take over: It’s used in film production (and also in news and weather reports) to relatively simply place the desired background behind the subject/actor/presenter. Green screen basically lets you drop in whatever background images you want behind the actors and/or foreground. It’s hard to miss the sheer amount of green you see on set. Think about behind-the-scenes clips or bloopers reels from Hollywood movies. Green screen is a visual effects (VFX) technique where two images or video streams are layered-i.e.
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