Depth of Field: Calculator

Stopdown draws the sharp zone instead of handing you a table of numbers. Pick a camera, then set focal length, aperture and focus distance. The band redraws as you go: where sharpness begins, where it ends, how deep it runs, and how much of it falls in front of the focus point and how much behind. Hyperfocal distance stays on screen, so you can see where to focus to send sharpness off to infinity. FREE • Depth of field for any sensor — from full frame down to a phone • Depth of field drawn to scale, with the numbers beside it • Hyperfocal distance, and how much sharpness sits in front and how much behind • Works offline. No account, no ads, no subscription STOPDOWN PRO — ONE PURCHASE, NO SUBSCRIPTION • Focus stacking planner: how many frames to shoot and at what step to cover the whole range • Need a particular depth? We'll find the aperture for it. The same maths, run backwards •…