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.