Everything in Zone Light Meter, explained.
Every modal, every tool, every option has its own page. 111 features are shipping today, with 7 more partially shipped. 89 are illustrated with real screenshots from the app. Pick a section below, or use search.
A small note:
PartialA few features are partially shipped. Their pages explain exactly what works today.
The Core Exposure Triangle
ISO, aperture, shutter, priority modes, and bulb integration
Advanced Light Reading & Metering Modes
Reflected, incident, spot, zoom, multi-spot, and EV display
Color & Frequency Analysis
Color temperature metering, filter factors, flicker detection
Next-Gen Zone System & AR Mapping
Zone calculator, false-color overlay, histogram, film latitude warnings
Analogue-Specific Compensations
Reciprocity, filter comp, bellows, multi-exposure, expired film, bracketing, IR, pinhole
Flash & Distance Computation
Flash exposure via Guide Number; distance estimation hooks
Sensor Calibration Engine
Per-device calibration workflow, community profiles, drift detection
Film Stock Database
Searchable film library, push/pull profiles, development time database
Cine / Motion Picture Mode
FPS, shutter angle, T-stops, cine film stocks, footage tracking, pulldown
Hardware Limitations (Camera Profiles)
Gear ranges, custom gear, presets, profiles, fixed-lens bodies, flash sync
The Digital-to-Analogue Bridge (Logging)
Shot logging, roll tracking, CSV export, development notes, scan attachment, cost tracking
Frictionless UI & Hands-Free Operation
Dark/red modes, high contrast, tactile dials, volume buttons, watch companion, voice, widgets
Celestial & Environmental Data
Ephemeris with countdown, reciprocity crossover, weather, altitude compensation
Darkroom Enlarger Exposure Module
Base exposure, enlargement factor, multigrade filters, dodge/burn timer
Alternative Process Exposure Module
UV calculator, cyanotype/platinum/salt print profiles, step tablet integration
Gamification & Education
Sunny 16 trainer, zone training, exposure journal analytics, daily streak
Progressive Disclosure & UX Philosophy
Simple default, layered features, quick actions, onboarding, calculator info
Offline-First Architecture
Full offline operation, sync on return, minimal battery drain, no network blocking
AR Focus Aids
Hyperfocal calculation, DoF preview, focus-peaking overlays
Trust & Data Ownership
No advertising or analytics SDKs, accuracy benchmarks, local-first data
First time here?
If you are new to film photography, start with the glossary. It defines the terms you'll see throughout these docs.
Open the glossary