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Calcimator

Vision System FOV Calculator

Calculate camera field of view, pixel resolution, and lens selection from sensor size, focal length, and working distance.

Inputs

mm
mm
mm
mm
mm
px
px

Results

FOV Width

266.67 mm

≈ 3 credit cards

FOV Height200 mm
Horizontal Resolution7.68 px/mm
Focal Length for Required FOV16 mm
Depth of Field86.8 mm
How to Use This Calculator
  1. Enter camera sensor width and height (mm) and focal length (mm).
  2. Set the working distance from lens to part surface (mm).
  3. Enter required field of view width and horizontal image resolution (pixels).
  4. Review actual FOV width and height (mm), pixel resolution (px/mm), and required focal length.
  5. Use depth-of-field output to verify the lens maintains focus across part height variation.

How the result changes with Focal Length

Focal LengthFOV Width
22145.45 mm
7145.07 mm
13124.43 mm
18017.78 mm

What each input means

Sensor Width
Camera sensor width (e.g., 1/2" sensor = 6.4mm).
Sensor Height
Camera sensor height.
Focal Length
Lens focal length.
Working Distance
Distance from the lens to the inspection surface.
Required FOV Width
Minimum horizontal field of view needed for the application.
Horizontal Resolution
Camera horizontal pixel count.
Vertical Resolution
Camera vertical pixel count.

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Sensor Width = 6.4, Sensor Height = 4.8, Focal Length = 12, Working Distance = 500 = 7 input(s) provided
  2. Calculate FOV Width
    FOV Width
    266.67 = 266.67
  3. Calculate FOV Height
    FOV Height
    200 = 200
  4. Calculate Horizontal Resolution
    Horizontal Resolution
    7.68 = 7.68

Engine last updated . Checked against 1 independently-derived test — how we verify calculators.

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