Best lighting for chroma key11/18/2023 It is a process that employs multiple skills including keying, color correction, rotoscoping, matting an object and lighting correction. Compositing includes adding things to shots, removing things from shots and painting things out from shots in addition to bringing shots together. Typically, compositing is the art of taking multiple images that were not captured together and blending the assets to make them look like they are one singular image. Keying is a compositing technique, but it’s not the only one. We'll also examine some common visual effects (VFX) techniques that can be used to fix bad chroma shots. Tint spillover from the background is very possible, as it is with any colored backdrop, you will need to employ measures to mitigate this.We'll look at some common problems and see how you can fix them while you're shooting. You want the exact same color and shade over the entire expanse of the photographed backdrop. This does not mean that it cannot be done, it is just a lot harder.Įxtremely even lighting on the background is also very important to easily edit out the background, even with the green one. So, if you want to be more comprehensive having both a chromakey green and blue and use the one that best fits the scene at hand.īut, practically speaking, for an photo enthusiast, just get the green one.Ī gray background will be much harder to deal with in removing the background. The green ones are a newer design and likely are more universal, but realize that if you just happen to have something in the image that is close to the same green of the background, removing the background may be more difficult that a few clicks with the mouse. The reason you use them in video, is the exact same reason you use them still photographs. If you want to remove the backdrop from your photographed scene, get one specifically designed for this (there are green and blue ones). If you were going to take pictures that you know you would PP out the background with something more interesting later, would you use a grey or chroma-key background for the shot?Ĭhroma-key is the way to go for video, but would it reflect green light on the subject in photos so that grey would be better? That ended up working very well, and the precise color and sharp electronic filters resulted in a very crisp effect. amber) was often used as a backlight to better separate the subject from the background when keying was used.Īs the technique advanced, a very specific green was developed for the "Ultimatte" process. As mentioned, lighting is critical for either color, as light reflecting off of the background can interfere with a clean mask around the subject. Walter Cronkite has blue eyes, however, so when CBS began to use chromakey as an element in the evening news, they had to use a green screen, or Uncle Walter's eyes would sparkle with the new inserted background image. I assume movies used blue for the same reason, even though "bluescreen" was an optical film technique, vs. ![]() ![]() When chromakey was a fairly new technique for television, blue was chosen because there is virtually no blue in (caucasian) skin tones. So it's just based on the subject, clothing, accessories, etc.? You use whichever gives you the most contrast?
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