Depth of Field Calculator
Work out exactly how much of your scene will be in sharp focus before you press the shutter. Enter your focal length, aperture, the distance to your subject, and pick a sensor size, and this calculator returns the near focus limit, the far focus limit, and the total depth of field. It also shows the hyperfocal distance for your settings, which is the closest focus point that keeps everything from half that distance to infinity acceptably sharp. Depth of field grows with a smaller aperture, a shorter focal length, and a greater subject distance, so the numbers here help you plan portraits with soft backgrounds or landscapes that stay crisp front to back. The math uses the standard circle of confusion for each sensor format. Everything runs in your browser, so nothing you enter is sent anywhere.
How to use Depth of Field Calculator
- Enter or select your focal length.
- Enter the aperture as an f-number.
- Enter the subject distance.
- Select your sensor size.
- Read the near limit, far limit, and total depth of field.
Frequently asked questions
What does depth of field depend on?
It depends on focal length, aperture, subject distance, and sensor size through the circle of confusion. This tool combines all four to compute the near limit, far limit, and total sharp zone.
Why does a smaller aperture increase depth of field?
A narrower aperture, meaning a higher f-number, bends light through a smaller opening, which widens the range of distances that appear acceptably sharp.
Does sensor size affect the result?
Yes, sensor size sets the circle of confusion used in the math, so a smaller sensor at the same settings generally shows more apparent depth of field.
What is Depth of Field Calculator?
Work out exactly how much of your scene will be in sharp focus before you press the shutter. Enter your focal length, aperture, the distance to your subject, and pick a sensor size, and this calculator returns the near focus limit, the far focus limit, and the total depth of field.
Is Depth of Field Calculator free to use?
Yes. Depth of Field Calculator is completely free, with no sign-up and no usage limits.
Does Depth of Field Calculator work in a web browser?
Yes. Depth of Field Calculator runs in any modern web browser. There is nothing to download or install.
Is my data private with Depth of Field Calculator?
Yes. Depth of Field Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.
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