Depth of Field Calc

Watch your in-focus zone redraw live on a lens-style scale as you change focal length, aperture and distance. Learn the why behind it. One-time unlock, no ads.

DoF Calc is a focused, good-looking depth-of-field and hyperfocal calculator for photographers and learners. Enter your focal length, aperture, focus distance and sensor format, and instantly see the near limit, far limit, hyperfocal distance and total depth of field.

THE DIFFERENCE: A LIVE CLARITY BAND

Most calculators just print numbers. DoF Calc shows you a live clarity band styled like the depth-of-field scale engraved on a manual lens barrel. The green in-focus zone redraws in real time as you slide focal length, aperture or distance, with a focus marker, a hyperfocal H tick, and f-marks that spread apart as you stop down. It is the headline visual that makes depth of field click.

LEARN AS YOU GO

Built-in plain-language explainers cover depth of field, hyperfocal distance, circle of confusion and diffraction, surfaced right on the main screen. A calculator that teaches, not just computes.

FREE

• Full depth-of-field calculator: near, far, hyperfocal and total DoF

• Live clarity band / lens depth-of-field-scale visualization

• 16 sensor and format options: Full Frame, APS-C (1.5x and Canon 1.6x), Micro 4/3, 1-inch, Medium Format, seven phone, action and compact sensor sizes, plus 645, 6x7 and 4x5 large format

• 80 real camera bodies across Canon, Nikon, Sony, Fuji (incl. GFX), Panasonic, OM/Olympus, Leica, Hasselblad, Sigma, Pentax and Ricoh, plus iPhone 15/16/17 Pro, Samsung S24/S25 Ultra, Pixel 9/10 Pro and GoPro Hero 11-13, each with megapixel data

• Diffraction warning: a green/amber/red traffic light (Sharp / Softening / Diffraction-limited) from the selected body's pixel pitch

• Field of view: horizontal, vertical and diagonal angle plus scene width and height at your focus distance

• Full circle-of-confusion control (auto, fine, loose or manual mm) so results can match common references

• Metric/Imperial toggle, precise tap-to-type entry, and an engraved aperture ring with click-stop haptics

• Save up to 2 lens presets, equivalent focal length for crop bodies, one-tap set-focus-to-hyperfocal

• Light/Dark/System appearance, infinity guardrail, and full accessibility (Dynamic Type to AX5, VoiceOver, Reduce Motion/Transparency, Increase Contrast)

PRO (one-time $3.99 unlock)

• Hyperfocal reference table: a full chart of hyperfocal distances across focal lengths and apertures for your sensor

• Focus-stacking planner: enter a near/far range and get the frame count plus the per-frame focus distance for each frame, with correct non-uniform steps and 20% overlap, usable down to 0.1 m macro (results are approximate in the macro range)

• Reverse framing tool: how far to stand so a known-height subject fills the full, half or third of your frame

• Unlimited saved lens presets

ACCURATE BY DESIGN

The engine is pure textbook DoF and hyperfocal math (H = f-squared / (N x c) + f) with strict millimeter unit discipline, locked to fixed acceptance targets in an automated test suite. Set circle of confusion to 0.030 mm to align with common reference calculators.

PRIVATE AND LOCAL

Everything runs on your device. No account, no cloud, no tracking, no ads, no data collected. One-time purchase, no subscription.

Languages: English and Simplified Chinese.