Quick visualization of a scene at location with camera and actor — reveals lighting, blocking, and framing issues instantly. Saves planning time and prevents costly reshoots.
You're on set, the director is unsure if the planned shot will work — and now it gets interesting. On-Set Previs solves this problem in minutes: pull out your smartphone or tablet, quickly run through the scene with the actor and camera, and immediately see what works and what doesn't. No long discussions in the office, no surprises in the edit. The reality on location is always more complex than any plan — lighting conditions, spatial proportions, actors' freedom of movement, camera accessibility. This quickly shows whether the preparation delivers on its promise.
In practice, it works like this: the director or their first AD takes the smartphone and roughly films the scene as planned — or even several variations in a row. It immediately becomes clear whether the actor can move into the planned depth, whether the camera truly enables a shot, or whether the lighting situation requires a completely different framing. Some sets work with simple sketch apps in parallel — quick composition notes directly on the tablet. This saves subsequent repositioning, which costs time and patience. Especially with complex action scenes or tight spatial configurations — for example, in apartments or cars — the difference between theory and execution quickly becomes apparent.
The psychological effect should not be underestimated: the director actually sees the scene realized, not just in their head. This provides confidence and allows for real decisions instead of guesswork. For the DoP, it also means clarity about lighting requirements — not all planned movements can be realized in every lighting mood. And for production: On-Set Previs saves time and money because mistakes on set are identified and corrected immediately, not days later in the edit.
It's important not to dwell too long on the recordings — five to ten minutes are usually enough. The quality of the recording doesn't matter, only the information. If the previs and reality diverge too much — especially on technical or spatial issues — you can also quickly involve the cinematographer or the location assistant. Some directors even use the smartphone videos later in the edit as a rough cut comparison to evaluate the final shots.