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THE FEUTEX TOOLKIT

Hyperfocal Focus Range

Calculate hyperfocal distance and the near sharp limit when focused at that distance.

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01 Your input
02 Your result
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FormulaHyperfocal distance = (f**2/(n*c)+f)/1000; Near limit at hyperfocal = (f**2/(n*c)+f)/2000
Sources and model references

Worked example

Inputs

Focal length
50 mm
F-number
8
Circle of confusion
0.025 mm

Expected results

Hyperfocal distance
12.55 m
Near limit at hyperfocal
6.275 m

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

  1. Calculate hyperfocal distance and the near sharp limit when focused at that distance.
  2. Set focal length, f-number, circle of confusion in the indicated units.
  3. Calculate and compare hyperfocal distance, near limit at hyperfocal.

Try this example

{
  "f": 50,
  "n": 8,
  "c": 0.025
}

Accuracy and scope

Thin-lens approximation and a user-chosen acceptable circle of confusion; diffraction and visual viewing conditions are not assessed.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.