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How Works Green Screen Technology

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How Works Green Screen Technology

Green is used as a backdrop for TV and electronic cinematography more than any other colour because television weathermen tended to wear blue suits. When chroma keying first came into use in television production, the blue screen that was then the norm in the movie industry was used out of habit, until other practical considerations caused the television industry to move from blue to green screens.

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Broadcast quality color television cameras use separate red, green and blue image sensors, and early analog TV chroma keyers required RGB component video to work reliably. From a technological perspective it was equally possible to use the blue or green channel, but because blue clothing was an ongoing challenge, the green screen came into common us.

Well, the out of the world experience is made possible with the technology called Green Screen technology. As the name itself should be indicative of, the actors are shot at the backdrop of a brightly colored fabric – especially the one with green color.

In fact, this technique has been used for bizarre movie sequences since long. Also referred to as Chroma Key effect, the technique has been one of the best methods for creating those special effects with an amazing clarity and authenticity.

Have you seen those sci-fi moves in a movie where actors seem to be flying through the fantastic landscapes. The Bizarre creatures and the tussle with them, riding on the backs of creatures that never existed on earth and a host of these special effects may have indeed made you go gaga over them. How do filmmakers shoot them? It is because of a technique called Green Screen Technology. What is it and how does it work? That is the essence of what we will be discussing today.

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How Does it Work?

The technology makes use of the concept referred to as Keying. Keying is a process where you would remove a particular color in an image or video with the use of software and replace it with some other element. This is akin to superimposing your objects into a video.

The technology makes use of a green screen while shooting the video or image. Why Green? Well, there are reasons for it. For an effective chroma keying effect, the color in the background should be distinctly different. It should provide a complete contrast. By theory, you should be able to use practically any color, but the fact that green is not necessarily a color you would wear would make it easy to replace when you sit out in your post-production session.

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The Essential Elements

What would you need for a better Green Screen effect and functionality thereof? Well, it does not need a huge lot of paraphernalia. A simple setup should help you get your work done, as long as you are aware of the techniques involved and the basics of green screen technology. If you are unaware of the techniques involved, you can check out a Comprehensive green screen tutorial for a better knowledge.

The Background

You can go with anything that is bright green. Ensure that the fabric – if you have chosen one – is smooth and has no wrinkles. You can also shoot against the green painted wall as well. The essence of the matter is it would need to be non complicated with respect to your lighting.

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The Lighting

Even lighting will ensure that there would be no shadows off your subject on the background. You need to keep your subject a few feet away from the background and use a separate point light for him. Use the key lights and fill lights judiciously enough. Avoid green bouncing from the background.

The camera

The camera should play a major role in enhancing the performance of your green screen performance. The camera needs to be able to capture better visual effects and backgrounds. It being a digital process, the performance of your camera should play an important role.

The Benefits of Green Screen technology

Well, green Screen technology helps you achieve the best results when it comes too the special effects for your movies or videos. Shoot with green screen and transport your actors to anywhere in the world or the universe! Rainforests, top of a mountain, the galaxy –you can dream of shooting your videos virtually from anywhere with your actors right on the spot. Isn’t that a wonderful thing in its on right?

In fact, green screen technology offers you a host of options in addition to the special effects. How about shooting in Switzerland without actually taking your team over there? You can get the footage from your overseas team and superimpose your actors in the wonderful scenario of Swiss Alps sitting in the comforts of your studio.

In essence, no matter whether you are looking ahead to an inexpensive mode of shooting low budget films or planning a shoot a range special effects, the green screen technology should be the best option you can fall back on.

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The Parting Thoughts

Well, that was all about green screen technique for shooting promotional videos or even the big budget movies. So much so that you can even use it for an effective DIY special effect scene for your YouTube video as well.

So, what do you think about this? Simply share all your views and thoughts in the comment section below. For the latest tech,social media news and reviews, follow firebebble.com on Twitter, Facebook and Instagram



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