![]() They are also great for a limited budget because they require less light. This gives a cleaner key around the subject, and there is less noise problems. Advantages / Disadvantages of Each Screen Green ScreenĪs discussed, digital cameras capture double the information on the green channel. The choice between blue and green screen really comes down to the demands of the project. Nonetheless, blue screen is still used today. ILM’s solution was to desaturate Hulk to greyscale for many shots, then balance him in the shot, before bringing him back to his green hue. This is great for characters like Captain America, but for Hulk it easily could have produced similar problems for Hulk. Then, in post, Superman’s suit was color-corrected back to the appropriate shade for the film’s release.Ĭonversely, the MCU is, for the most part, shot in front of a green screen. ![]() Most notably in filming Superman’s costume in Superman - The Movie. The filmmakers had to opt for a different shade of blue to distinguish his suit from the blue screen. This had been a problem for blue screen work in the past. In addition, green is typically uncommon in costumes, which means less issues in post-production. ![]() ![]() Another reason is that green screens need less light than blue screens as green reflects more light. Partly, this is because digital cameras capture twice the amount of green than red or blue hues, which makes it easier to key out in post-production. So why the shift to green screen?Īs film-making shifted to a digital post-production process, green screens became favorable. This makes blue screen perfect to use with an optical printer to initiate compositing. Secondly, blue shows up as bright white when exposed onto black and white film with a blue light. First, the blue channel has the smallest grain, which gives a cleaner matte along edges and a better quality image. Blue screen was the traditional chroma key of choice for two reasons. Remember all the “Making of” videos from old science fiction films like Star Wars: A New Hope? Remember how they exclusively used blue screens for inserting special effects into film? Well, there is a reason for this. Humans are, of course, the main subject of the majority of live-action films, making blue or green a good contrast for compositing. On a color wheel blue and green sit on the opposite of where skin tones sit. The reason is that on a color wheel, blue and green are furthermost from human skin tones. There is an important reason for using blue or green. In post-production, you can remove this solid color background to make it transparent. When filming, the green or blue screen (a solid block of color) acts like a matte for your footage. Every color of the spectrum has a chroma range. Chroma Key CompositingĬhroma Key compositing, or chroma keying, is a visual effects and post-production technique where two images or video streams are layered (composited) together based on color hues. We’ll also use some relevant examples from films, and since here at Bold Entrance, we focus on major franchises, our examples will follow suit. From there, we’ll cover the various factors you need to consider in choosing the most appropriate screen for your film. green screen.įirst, you need to understand chroma key compositing and why blue or green screens are required. Here we focus exclusively on blue screen vs. Other colors such as black have also been used but is little known. There is a difference between using blue screen vs.
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