VFX Rocks....

Visual effects (or 'VFX' for short) is the term given to a sub-category of special effects in which images or film frames are created and manipulated for film and video. Visual effects usually involve the integration of live-action footage with computer generated imagery or other elements (such as pyrotechnics or model work) in order to create environments or scenarios which look realistic, but would be dangerous, costly, or simply impossible to capture on film. They have become increasingly common in big-budget films, and have also recently become accessible to the amateur filmmaker with the introduction of affordable animation and compositing software.

Have a Look at this Video for Instance:



Timing

Visual effects are frequently integral to a movie's story and appeal. Although most visual-effects work is completed during post-production, it usually must be carefully planned and choreographed in pre-production and production. A Visual effects supervisor is usually involved with the production from an early stage to work closely with production and the Director to achieve the desired effects.

Categories

Visual effects may be divided into at least four categories:

Models: miniature sets and models, animatronics
Matte paintings and stills: digital or traditional paintings or photographs which serve as background plates for keyed or rotoscoped elements
Live-action effects: keying actors or models through bluescreening and greenscreening
Digital animation: modeling, computer graphics lighting, texturing, rigging, animating, and rendering computer generated 3D characters, particle effects, digital sets, backgrounds, etc

VFX Demo Reel:



Let us now analyze on the companies and the softwares which are used in these VFX scenes....