PhotoCalc

PhotoCalc brings together the technical calculations photographers need in one place: enter a few values, get the result instantly — no math background and no internet connection required. ■ ASTRO MODULE 500 rule, NPF rule and a dedicated Milky Way calculation to know the maximum exposure time before stars start trailing, using your saved lenses. ■ PHOTO MODULE Hyperfocal distance, depth of field, field of view and focal length equivalence — the calculations you need for landscape, macro and choosing a lens. ■ SEQUENCES Calculate the total duration of an intervalometer session or a focus stack from the number of shots, exposure time and interval. ■ YOUR CAMERAS AND LENSES Save your camera bodies and lenses (sensor, resolution, actual aperture): calculations are pre-filled automatically with the right values, no retyping every time. Multiple cameras supported, with a favorite. ■ BUILT FOR THE FIELD Readable interface, usable with one hand, choice of units (meters, centimeters, feet, inches). ■ 100% OFFLINE No connection needed to calculate. No account, no sign-up, no data sent to a server: your cameras and lenses stay on your phone. A discreet banner ad funds the free app.