Machine Vision & Industrial Inspection AI calculator

Camera Field of View Calculator

Field of view (FOV) is the width of the inspection area visible to the camera at a given working distance. It depends on the camera sensor width and the lens focal length. A wider FOV covers a larger area but reduces inspection resolution (mm per pixel). A narrower FOV gives higher resolution but requires more cameras or more passes to cover the full part. Enter your sensor width (from the camera datasheet), the lens focal length, and the planned working distance to calculate horizontal FOV.

What this calculator does

  • Calculate the horizontal field of view (FOV) of a machine vision camera from sensor width, lens focal length, and working distance, so you can confirm the camera sees the full inspection area at the chosen working distance.
  • Use it when selecting a lens for a new inspection station and you need to confirm that the chosen sensor and focal length combination produces a field of view that covers the full part width at the planned working distance.
  • Turns camera sensor width, lens focal length, working distance into a ratio for field of view in machine vision and industrial inspection ai.

Formula used

  • Horizontal FOV = (sensor width / focal length) x working distance
  • Example: (8.8 mm / 16 mm) x 400 mm = 220 mm FOV

Inputs explained

  • Camera sensor width: Enter the sensor width in mm from the camera datasheet. Common values: 1/4 inch = 3.6 mm, 1/3 inch = 4.8 mm, 1/2 inch = 6.4 mm, 2/3 inch = 8.8 mm, 1 inch = 12.8 mm.
  • Lens focal length: Enter the focal length of the lens in mm. Common machine vision focal lengths: 8 mm, 12 mm, 16 mm, 25 mm, 35 mm. Shorter focal lengths give wider FOV; longer focal lengths give narrower FOV.
  • Working distance: Enter the distance from the lens front to the object being inspected in mm. This is the physical standoff between the camera lens and the part surface.

How to use the result

  • Use it when field of view in machine vision and industrial inspection ai is being normalized for comparison.
  • Ratios hide absolute change; pair with the underlying counts when you present.

Common questions

  • What does the field of view calculator give me? Calculate the horizontal field of view (FOV) of a machine vision camera from sensor width, lens focal length, and working distance, so you can confirm the camera sees the full inspection area at the chosen working distance. You get a ratio you can defend before quoting, scheduling, or sign-off.
  • Which assumptions drive the ratio? camera sensor width, lens focal length, working distance usually move the ratio most. Pull from measured machine vision and industrial inspection ai runs, supplier data, and recent quotes rather than memory.
  • How should I use the result? Use the ratio in machine vision and industrial inspection ai reporting or as a normalized score against another period.
  • What should I verify first? Confirm both inputs are from the same time window and scope before you trust the ratio.

Last reviewed 2026-05-12.