What is visual effects (VFX)?
Visual effects is everything in the frame that was not there when the camera rolled. The term covers an enormous range: removing a crew member's reflection from a window, extending a set beyond the edge of the stage, replacing a sky, adding a product that was not ready in time for the shoot, building a city, putting a logo on a surface that moves. If it was created or changed in post-production and it is meant to look like it was filmed, it is VFX.
It is different from motion graphics, which are designed elements (titles, animated type, infographics) that are meant to look designed. The line blurs in practice, and many artists do both, but the intent is distinct. VFX hides itself. Motion graphics show themselves.
Why it matters
Why VFX matters
Most VFX in advertising is invisible, and that is the point. The clean plate behind a product, the perfectly still water, the label that reads correctly in every market: these are effects, and the audience never knows. For a luxury brand the standard is absolute, because any flaw in the image reads as a flaw in the object. For a fashion campaign, VFX is what makes a studio look like a cliff edge.
The visible kind matters too. Effects let a brand show an idea that cannot be staged: the inside of a product, a transformation, a scale that no location offers. A film with no effects is limited to what could be put in front of a lens on the day. A film with good effects is limited by the idea. Effects also buy time and safety: a product that is not finished, a location that cannot be closed, a stunt nobody should perform, all of them become possible in post.
In practice
How VFX works in practice
- 01
VFX starts in pre-production. A VFX supervisor reads the script or the boards, flags every shot that will need work, and tells the crew how to shoot it: what to track, which plates to capture clean, where to put the markers, what reference to photograph for light and reflection. On set they make sure it happens, because an effect that was not planned for costs ten times as much to fix.
- 02
After the edit is locked, the shots go to the artists. Compositing combines layers into one image. Rotoscoping cuts elements out frame by frame. Tracking matches new elements to the camera's movement. 3D work builds objects and environments and lights them to match the plate. Each shot goes through versions until the supervisor and the director sign it off, and then it returns to the edit for the grade and the final finish. Budgets are counted in shots and in the difficulty of each one, not in minutes of screen time. A thirty-second spot with three complex shots can cost more in effects than a four-minute film with forty simple ones, which is why the VFX conversation belongs in the first budget meeting and not the last.
Watch out
What people get wrong about VFX
Thinking it can fix anything. "We'll fix it in post" is the most expensive sentence in production, because a shot that was not captured properly for effects needs far more work than one that was. The second mistake is the opposite: avoiding VFX entirely out of fear that it will look fake. Bad effects look fake. Good effects are already in most of the work you admire and you have never noticed.
The third is leaving the supervisor off the shoot. A VFX artist who sees the plates for the first time in post is guessing at the lens, the light and the motion. A supervisor on set for a day saves weeks in the suite. The fourth is forgetting the versions: every effect has to be redone for every crop, so plan the vertical and square deliverables before the artists start, not after.
