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.

Presets select both active dimensions. Editing either dimension switches to Custom. Use the active recording area, not an uncropped sensor size; no anamorphic desqueeze is applied. Manufacturer dimensions are rounded. Sources: RED KOMODO v1.3 formats, ARRI ALEXA Mini, ARRI ALEXA 35.

Horizontal FOV (Unreal) 37.50 °
Vertical FOV 21.62 °
Focal Length (Unreal mm) 35.0 mm
35mm Equivalent 53.0 mm
Unreal Engine CineCamera settings:
Filmback → Sensor Width: 23.76 mm  |  Sensor Height: 13.365 mm  |  Focal Length: 35.0 mm  |  Field of View: 37.50°

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

Use matched sensor dimensions and focal length as one starting point for virtual-camera framing. Tracked pose, lens distortion, timing, and the keying/compositing path still require calibration in the real system.

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

Share the tool with your camera department. The page link does not include entered values.

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.

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