Projector throw distance must match the venue's depth and target size

A projector’s throw — how far it sits from the surface for a given image size — decides whether it physically fits a space. Short-throw projectors fill a large image from very close, so they suit small rooms, galleries, and stages where performers or visitors would otherwise cast shadows in a long beam. Long-throw projectors are needed to cover large targets from far away, such as building facades. Picking the wrong throw for the available depth can make the intended projection footprint impossible: too little clearance and a standard projector can’t fill the surface; too much and the image overshoots. For permanent or round-the-clock pieces, laser projectors are preferred because they avoid lamp-replacement downtime.

Examples

A 2m-wide sculpture in a gallery with only 1.5m of clearance needs a short-throw (or ultra-short-throw) projector; a 30m facade viewed from across a square needs a long-throw. A museum installation running daily favours a laser projector to avoid lamp swaps.

Assessment

Given a venue with shallow depth and a wide target, state which projector throw category you’d consider first and why, and name one reason to choose a laser projector for a permanent install.