Thanks to movies and television, we’ve all experienced fantastical worlds that could never exist on our Earthly plane. Even if we don’t typically enjoy the fantasy genre, we’ve definitely seen these effects in action — whether in cinema, commercials or even video games. This post explores how to create these worlds using visual effects. So what is VFX? How and why do filmmakers use it? We’ll explore VFX by defining the term with epic examples from some of your favorite films.
Watch: Recreating the Scene — Inception VFX
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Define visual effects and VFX meaning
VFX stands for visual effects, which can be shortened to visual FX. The use of visual effects in movies and TV has increased exponentially over the past few decades. What used to be reserved for spectacular science fiction movies and big-budget action movies can now be found in your everyday Rom-com.
There are three main types of VFX that we'll explain in a minute. But before we show you some examples, let’s define visual effects.
What is VFX?
Visual effects (VFX) is a term used to describe imagery created, manipulated, or enhanced for any film, or other moving media that doesn't take place during live-action shooting. VFX often involves the integration between actual footage and this manipulated imagery to create realistic looking environments for the context. These environments created are either too dangerous to actually shoot, or worlds that just don’t exist. They use computer-generated imagery (CGI), and particular VFX software to make it happen. VFX producers communicate with directors and cinematographers to determine which scenes require them to shoot with green screens.
Visual effects are different from special effects because visual effects require a computer and are added in after shooting. Special effects, or SFX are realized on set — they are things like purposeful and controlled explosions, fake gunshot wounds, etc.
An example of VFX would be the dragons flying through the sky in Game of Thrones, or a spaceship flying through space in Star Wars.
COMMON VFX SOFTWARE:
- Adobe After Effects
- Maxon Cinema 4D
- Autodesk Maya
- 3Ds Max
What Is VFX In Movies
Types of visual effects in film
As mentioned above, there are many aspects to the VFX process but they can all be organized into three main types: CGI, compositing, and motion capture. Each of these either takes place after principal photography or simultaneously in a dedicated and controlled studio (e.g., a mocap studio).
Visual effects artists use tools that help in all capacities of blending the line between "real" and "unreal." One such tool is called an HDRI (high dynamic range image) as explained in this Vox video.
But while the tools of the trade are changing all the time, the end goal is always the same — to make something fake look real. There is a lot of overlap between the various types of visual effects in film but let's go through them separately to see how they work.
Computer generated visual effects
At this point, CGI (computer generated imagery) is a ubiquitous type of visual effects. And it's easy for people, especially those outside the film industry, to lump all visual effects under the banner of CGI. Granted, computers are necessary for nearly all forms of visual effects these days so it's an easy assumption to make. But the difference between VFX and CGI is clear.
For our purposes, CGI is imagery made completely within computers and other types of visual FX use them to enhance or combine live action footage. The easiest example to choose is CG animation, which has been dominated by Pixar for the past three decades. Take a look at the evolution of their CGI capabilities throughout the years.
So, while CG visual effects need only computers, let's move onto to other types of effects that use them to augment live action.
Shooting for VFX
Compositing and green screen VFX
And now, let's move onto the final type of visual effects that combines the power of CGI and the authenticity of live action — motion capture.
The Future of VFX Movies
Motion capture visual effects
Similar to the old fashioned technique of rotoscoping, visual effects artists today can use live action reference to create more realistic CGI. This process is called motion capture (or mocap). The technology has been around for a number of years but the capabilities seem to leap even further every year.
Here are some highlights from recent VFX movies.
Now that we've reviewed the basic categories of visual effects, let's see them in action. The following are some recent and exceptional usages of VFX in movies.
Visual Effects in Movies
VFX examples in movies
So, how do VFX artists, producers, and editors employ these effects?
Well they’re the ones who, in post-production, use CGI to create the impossible imagery you see in cinema. This has become increasingly common in bigger budget films.
Let’s take a look at some examples:
Disney isn’t messing around. They’re going full force in their live-action remakes. And because most of them deal with talking animals, all of them have some equally incredible visual effects.
Tim Burton’s re-imagination includes a photorealistic elephant that began as clay models that were scanned into computers for animation.
Using a mixture of motion-capture footage and hand-drawn animation, Weta Digital wanted to capture the most authentic performances as possible.
The Matrix (1999)
This film raised the bar for cinematography in multiple ways. There is an iconic scene where Keanu’s character dodges a bullet. Watch the scene below.
How did they do it? This frozen moment executed by VFX Supervisor, John Gaeta, employed something called “bullet time.” Gaeta worked with the directors and cinematographer to place 122 still cameras around Reeves, then triggering them in sequence.
But in order to make sure the cameras weren’t visible, he needed to create photorealistic sets so the cameras could be removed.
Also, the computer code on screen was something not previously done, or at least, done well.
Gaeta, and Kim Libreri, a second VFX supervisor, and the rest of the team, were able to give the audience this idea of “thinking in code.”
Extra ResourcesOf course, you can't learn VFX by simply watching movies. Luckily for you, there are a ton of VFX courses you can take online to learn the technicals. Lynda.com has a great VFX course, and Udemy’s VFX course is equally impressive.
Green screen like a pro
We briefly mentioned VFX using green screens in this article. Let’s go a little deeper and understand how you can use them for your projects. It’s not overly complicated, but does require considerable planning.