
Exposir
Light Meter for Photographers
About
What's New in Exposir
1.3
September 9, 2026
Long exposures now account for reciprocity failure. Film loses effective speed during a long exposure, so a metered time followed literally comes out underexposed. Choose your film in Long Exposure mode and Exposir corrects the shutter time for you — on HP5 Plus a metered 10 seconds becomes 20, on Tri-X 400 it becomes 50. Corrections come from each manufacturer's own published data, and the metered time and the correction in stops stay on screen, so you can always see exactly what changed. Treat them as a starting point and test for critical work. Also in this release: - Added ISO 160, for Portra 160 and Pro 160NS - The exposure lock now survives closing Long Exposure mode
More




