FREE · CALCULATORS & CONVERTERS
Depth of Field Calculator.
Calculate hyperfocal, near and far distances from focal length, aperture, distance and circle of confusion.
H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
- Hyperfocal distance
- 29.811905 m
- Near distance
- 4.286988 m
- Far distance
- 5.997505 m
- Depth of field
- 1.710517 m
Hyperfocal distance H = f² / (N × c) + f, with f and c in millimetres. Near and far distances use that H. Circle-of-confusion presets are conventional values. Distances are along the optical axis.
How to use Depth of Field Calculator
Enter the lens and the subject distance. Pick a sensor preset or type a circle of confusion.
How it works
Calculate hyperfocal, near and far distances from focal length, aperture, distance and circle of confusion. H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional.
Example
A 50 mm lens at f/2.8 focused at 5 m on a full-frame circle of confusion.
Questions about Depth of Field Calculator
Is Depth of Field Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
H = f² / (N × c) + f. Preset circles of confusion are conventional. Distances follow the optical axis. Local arithmetic only. This is a quantity or geometry estimate, not a code check and not a substitute for a licensed professional. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.