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Calcimator

Cinema DOF Calculator

Calculate depth of field and hyperfocal distance for cinema cameras.

Inputs

mm
ft
mm

Results

Total DOF

2.46 ft

≈ 9 credit cards

Near Limit8.92 ft
Far Limit11.38 ft
Hyperfocal Distance81.5 ft
How to Use This Calculator
  1. Enter Focal Length in millimeters — the lens focal length you are using on set.
  2. Set Aperture (f-stop) — wider apertures (lower f-numbers) produce shallower depth of field.
  3. Select Sensor Size (Full Frame, APS-C, Super35, etc.) to apply the correct circle of confusion.
  4. Input Focus Distance in feet — the distance from lens to your primary subject.
  5. Read Total DOF (ft) to know the range in which subjects will appear acceptably sharp.
  6. Use Near Limit (ft), Far Limit (ft), and Hyperfocal Distance (ft) to plan focus pulls.

How the result changes with Focal Length

Focal LengthTotal DOF
641.47 ft
2130.12 ft
3910.04 ft
5400.02 ft

What each input means

Focal Length
Lens focal length in millimeters.
Aperture (f-stop)
Lens aperture f-number (e.g., 2.8).
Subject Distance
Distance from camera to subject in feet.
Sensor Width
Camera sensor width (36mm = full frame, 23.5mm = Super 35).

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Focal Length = 50, Aperture (f-stop) = 2.8, Subject Distance = 10, Sensor Width = 36 = 4 input(s) provided
  2. Calculate Total DOF
    Total DOF
    2.46 = 2.46
  3. Calculate Near Limit
    Near Limit
    8.92 = 8.92
  4. Calculate Far Limit
    Far Limit
    11.38 = 11.38

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