Precision motion for film: how linear sensors solve common rigging challenges

In film and television, high-quality visuals rely on more than just cameras. Many of today’s smooth, dynamic shots depend on advanced motion platforms, driven by the accuracy of linear sensors.

From tracking shots to visual effects-heavy sequences, ensuring precise, repeatable movement is the key focus for motion control designers and rig engineers. Linear sensors provide real-time position feedback, ensuring consistent control when moving a camera dolly, tilting a set piece, or operating animatronics.

Challenges faced on set

Unlike industrial automation, film motion platforms must synchronise with actors, lighting cues, and visual effects. Minor deviations can cause actors or equipment to end up in the wrong place, resulting in unusable footage or extra takes, costing additional time and money. Linear sensors offer the resolution and reliability needed for:

• Camera tracking systems
• Motion-controlled rigs for stunts or set movement
• Repeatable takes for special effects and green screen shots
• Precision-controlled cranes, jibs, and dollies

Common issues motion control teams face include:

• Low resolution feedback, causing inaccurate movement or positioning
• Downtime from sensor wear or failure during long shoots
• Poor repeatability, especially in green screen or sequences with high levels of visual effects
• Environmental exposure to dust, moisture or vibration on location

Selecting the right sensor

Contactless linear position sensors, such as the P111, are often chosen for their long-life, maintenance-free use.

They offer:

• High-resolution, real-time feedback for frame-accurate control
• Contactless designs with zero wear
• IP-rated housings for reliable performance in tough conditions
• Compact form factors for tight rigging spaces
• Seamless integration with common control systems

Trusted by motion control experts

As a specialist supplier of linear position sensors, we work with motion control designers and rig engineers to specify the right sensor for each platform, whether it’s a prototype of a one-off motion platform or scaling up a multi-rig production environment. From high-speed dolly systems to complex multi-axis rigs, our sensors help bring creative vision to life with engineering precision.

Need help selecting a linear sensor for your next rig or motion platform? Get in touch with our technical team.