PHFX • Phil Holland | Tools • Depth of Field Calculator

Acquisition Format Make Model Format

Lens & Focus Focal Length (mm) Subject Distance Distance Unit Convert Results To

Imaging Circle of Confusion Sampling Diffraction Wavelength

Range

Camera and Format Information

Camera—

Format—

Image Circle—

Resolution—

Pixel Pitch—

Circle of Confusion—

Sampling—

Diffraction Reference—

Lens and Focus Information

Focal Length—

Lens Type—

Field of View—

Focus Distance—

Optimal f/Stop Range—

Sweet Spot f/Stop Range—

Lenses often perform best when stopped down around 3 stops from maximum aperture.

Depth of Field Table

Depth of field is computed from the sensor pixel pitch, the chosen circle of confusion, and standard thin-lens hyperfocal geometry. The Diffraction value compares the Airy disk diameter (2.44 × wavelength × f-number) to the pixel pitch; 2.5 or higher indicates visible softening. Results are estimates — real-world focus falloff varies with lens design, field curvature, and focus accuracy.