Actinic: Exposure Calculator

By 永 张 on AppTrack Ninja.

Reciprocity Failure, Offline

Actinic is a fast, fully offline exposure calculator built for film photographers — a film exposure calculator that also solves the one thing most light-meter apps skip: reciprocity failure on long exposures. Dial in a Sunny 16 reading or your own aperture, shutter, and ISO, then read the full wheel of equivalent exposures instantly — no camera permissions, no accounts, no network calls, ever. Shooting past a second? Pick your film stock — Tri-X, HP5 Plus, T-Max, Portra, Acros, and more — and Actinic corrects your exposure time for reciprocity failure using published manufacturer data, so you…

Categories: Utilities

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