DoF Visualizer

DoF Visualizer — Ten Visual Tools for Photographers

Stop guessing what your gear will do. DoF Visualizer turns the math behind
photography into clear, interactive diagrams you can read at a glance.
Drag a slider and watch the focus zone shift, the bokeh balls grow, the
star trails appear. Plan the shot before you press the shutter.

Built for photographers who care about why their images look the way they
do — from portrait shooters chasing creamy backgrounds, to landscape
photographers planning silky water, to astrophotographers timing their
exposures, to macro shooters stacking focus on a single flower.

TEN TOOLS IN ONE APP

• Depth of Field — See exactly what's sharp. Live cone visualization with
near focus, far focus, and hyperfocal distance for any lens, aperture,
and sensor.

• Hyperfocal Distance — Maximize depth of field for landscapes. Watch the
in-focus band slide and stretch as the aperture changes, with an
animate-aperture demo that shows the effect at a glance.

• Bokeh — Preview background blur before you shoot. Adjust focal length,
aperture, subject distance and background distance to see how big those
bokeh balls will actually be.

• Diffraction — Watch the Airy disk grow across your sensor's pixel grid.
Find the aperture where diffraction starts robbing detail on your
specific megapixel count.

• Focus Stacking — Plan macro stacks. Tell it your subject depth and it
returns the number of shots and the focus step in millimeters, with
every slice's depth of field visualized.

• Crop Compare — One focal length, four sensors. See concentric framing
rectangles for Micro 4/3, APS-C, Full Frame, and Medium Format, with
equivalent focal lengths labeled.

• Nodal Rail — Estimate the no-parallax-point offset for stitched
panoramas. Save calibrated values per lens and recall them with a tap.

• ND Filter — Long-exposure planner. Pick your base shutter and target
exposure, get the exact stops needed and the nearest standard ND filter.

• Astro — Maximum exposure for sharp stars, using the modern NPF rule
(more accurate than the 500 rule for high-megapixel sensors). Stars
stay as dots — or sprout trails when you push past the limit.

• Sun — Sunrise, sunset, solar noon, day length, golden hour, and civil
twilight at your GPS location. Computed locally, no internet required.
The on-screen arc even rises and falls with the season.

DESIGNED FOR THE WAY PHOTOGRAPHERS THINK

• Real lenses, real focal lengths — 8 mm through 1200 mm, the focal
lengths actual lenses are built for.

• All four common formats — Micro 4/3, APS-C, Full Frame, and Medium
Format, with the correct circle of confusion and sensor dimensions.

• Interactive visualizations — Every slider updates a live diagram. No
number-crunching, no spreadsheets, no guessing.

• Works anywhere — All calculations run on-device. No accounts, no ads,
no subscriptions, no network required (location is used only by the
Sun tool, and only with your permission).

• Clean and fast — Native SwiftUI. Open the app, tap a tool, start
planning.

WHO IT'S FOR

• Portrait photographers picking the right aperture for soft backgrounds.
• Landscape photographers timing long exposures and dialing in hyperfocal
distance.
• Astrophotographers calculating their max shutter speed and timing the
blue hour.
• Macro photographers planning focus-stacking sequences.
• Videographers and panorama shooters working with nodal rails.
• Anyone shooting at golden hour and needing the times for tonight's
location.
• Students learning the optics behind their gear.
• Anyone shopping for a new lens, sensor, or filter and wanting to see
what it'll actually do.

Take the guesswork out of every shot. See the physics, then make the photo.