01
ISO, aperture, shutter, priority modes, and bulb integration
Full ISO range from technical paper to ultra-fast colour stocks, picked through a Film Stock or Custom ISO mode.
Viewfinder > ISO dial > tap to open the ISO picker
Pick aperture in full, half, or third stops across the entire practical range.
Viewfinder > Aperture chip, or Equipment tab > Lenses
Pre-1960 European full-stop scale, alongside or in place of the modern ISO scale.
Viewfinder > Aperture chip > Continental scale section
Type any f-number for unusual or vintage lenses.
Equipment tab > Lenses > Add Custom Lens, or Viewfinder > Aperture chip > Custom
Shutter speeds from 1/8000 down to multi-minute long exposures.
Viewfinder > Shutter chip
Bulb is a first-class shutter setting across the metering pipeline.
Equipment tab > Cameras / Lenses (hasBulb checkbox), surfaces in Viewfinder shutter recommendations
Stopwatch for long exposures with optional haptic and voice cues.
Tools tab > Bulb Timer
Timer waits for the phone to stop wobbling before it starts the count.
Tools tab > Bulb Timer > Gyro auto-start toggle
Pin ISO and let aperture and shutter both vary; not yet wired.
Hold aperture; the solver picks the matching shutter.
Viewfinder > Priority Mode chip > Aperture
Hold shutter; the solver picks the matching aperture.
Viewfinder > Priority Mode chip > Shutter
Lock the meter so the next reading does not overwrite this one.
Viewfinder > Hold Reading button (bottom area, after a reading is active)
Constrain the solver to stay inside the loaded film's latitude; not yet wired.
Field guide
The Sunny 16 Rule, Explained
Glossary
Aperture
Shutter speed
Exposure value
Next section →
02 Advanced Light Reading & Metering Modes
Search documentation
Search requires JavaScript. You can still browse via the documentation index.
npm run build
