Pre-shoot visualization of complex camera, lighting, and VFX rigs — usually 3D-based. Shows directors and crew constraints upfront before stage day.
Before the first camera rolls, it must be clarified whether what the director envisions is technically feasible at all—and under what conditions. This is where Technical Previs comes in. It is less a work of art than a tool: a detailed simulation of camera movements, lighting, and visual effects in 3D space, long before any footage is captured. Not for emotional storytelling, but for hard facts—sightlines, crane reach, shadow casting, rendering time.
The practice works like this: The Techvis Supervisor collaborates with the camera and VFX departments, recreating the set (or parts of it) in 3D, positioning virtual cameras, and simulating the planned moves. This immediately reveals conflicts—the crane doesn't fit the angle the director wants; the lighting casts shadows on faces that should remain clear; the planned VFX composition requires more space in the frame than is available. Instead of discovering this on set, where time and budget are literally burning, we clarify it digitally.
On set itself, Techvis then serves as the memory: The supervisor has documented all planned positions, lens choices, and movement profiles. This significantly saves setup time—the initial camera setup doesn't involve two hours of experimentation but follows a proven plan. For VFX-heavy shots, Techvis is essential: green screen configurations, camera match requirements, tracking markers—everything is pre-calculated. The VFX Supervisor knows exactly which focal length, which camera distance, which movement they will need to match later.
Typically, Techvis is used for large action sequences, digital environments, or complex multi-layer scenes—where improvisation becomes expensive. For an indie drama with static camera work, it's overkill. But for a blockbuster flight through a city, for stunt coordination in conjunction with VFX, for set builds in real locations with limited space: it's indispensable. The best directorial idea is only as good as its technical feasibility—Techvis makes this visible long before the first dollar is spent on set.