Light Meter & Logbook

Turn your phone into a professional light meter and photo logbook — built for film, digital, medium-format, and pinhole photography. **ACCURATE EXPOSURES** • Reflected metering using your phone’s camera • Incident metering using the built-in light sensor • EV calibration for consistent, precise results • Fractional stops (½, ⅓) for fine control **ADVANCED TOOLS** • ISO from 3 to 25,600 — full range for any situation • ND filter support and long-exposure timer with reciprocity correction • Spot metering with live histogram • 35 mm equivalent and medium-format focal length display • Color filter preview for accurate B&W film visualization • Pinhole camera support with custom f-numbers • Built-in library of 20+ films; add your own and use push/pull • Equipment profiles for cameras, lenses, and pinhole — including medium format **FAST & FLEXIBLE** • One-tap exposure calculation • Customizable metering layout • Dark mode and haptic feedback **PHOTO LOGBOOK** • Record exposure settings, location, and notes for every shot • Keep all shooting data organized and easy to find **PERSONALIZED INTERFACE** • Light, Dark, or System theme • Material You dynamic colors • Custom primary color Download Light Meter & Logbook for accurate exposures and a complete shooting record — all in one app.