XR / VIRTUAL PRODUCTION

Unreal Engine Camera FOV Calculator

Calculate the horizontal field of view and LED wall frustum size for XR virtual production based on camera focal length and sensor size.

Essential for matching real-world lenses to Unreal Engine CineCameras. Use this alongside our LED wall planner to dimension your volume. Explore more broadcast engineering tools for IP video and media networking.

Horizontal FOV (Unreal) 37.8 °
Vertical FOV 21.8 °
Focal Length (Unreal mm) 35.0 mm
35mm Equivalent 52.9 mm
Unreal Engine CineCamera settings:
Filmback → Sensor Width: 23.76 mm  |  Sensor Height: 13.365 mm  |  Focal Length: 35.0 mm  |  Field of View: 37.8°

Real-World Use Cases

LED Volume / In-Camera VFX

Use the ideal pinhole result as a starting point for Unreal Engine filmback and focal-length settings, then calibrate the tracked camera and lens with the production system.

Pre-Viz & Tech Scouting

Compare idealised FOV values while pre-visualising compositions, then confirm framing with the actual sensor mode, lens, focus distance, and distortion.

Augmented Reality Broadcast

Align a virtual studio graphics layer with the studio camera by matching sensor dimensions and lens focal length for zero-parallax key compositing.

Measurement Cross-Check

Compare the idealised calculation with a measured or calibrated system result to help investigate sensor-mode, lens-data, focus, or distortion differences.

Use this in your next XR production

Bookmark and share with your VP supervisor or camera department.

What is the XR Camera FOV Calculator?

Matches physical cinema lenses to virtual Unreal Engine CineCameras by calculating Horizontal and Vertical Field of View (FOV) based on focal length and sensor filmback size.

The result follows a pinhole-camera model. Real lenses, focus breathing, distortion, sensor crops, stabilisation, and camera processing can change the observed field of view.

Real-World Use Cases

Used as one reference during virtual-production setup before a proper tracked-camera and lens calibration on the actual stage.

Use the result to prepare a setup, then compare it with measured framing and the tracked-camera calibration in the actual production system.

Technical Methodology

Uses the ideal pinhole relation FOV = 2 × arctan(sensor dimension / (2 × focal length)). The output does not model lens distortion or establish a calibrated Unreal Engine frustum by itself.

Our formulas are based on established SMPTE and EBU standards. By calculating these values theoretically, engineering teams can design predictable workflows and set clear expectations for clients regarding production quality and protocol limitations.

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