Do not always trust what you see...

We all have heard about the blue/green - screen effect or colour-keying technique. In a few words it´s a technique that allows filmmakers to combine two (or more) scenes using a mask to reveal or hide parts of the scene. The result is a mix of both sources, like if you would mask two pictures in Photoshop.
This method has been widely used in movies that we all have seen. Think of many scenes of the movie Titanic which were recorded in a studio. Check this site here for more details about the whole FX behind it.

Today I found a video showing us many examples of videos using this effect... stunning, isn´t it? Who knows how much we are watching on TV or Movies which has been done by this...

So... don´t always trust what your eyes see :-)

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