Expozia — Film Light Meter
Exposure, flash & a film log
Only for iPhone
$6.99
iPhone
New: Static mode freezes a reading — reset or save it to your camera roll. Plus Live metering, spot/center/matrix, flash calculator, ND compensation. One-time purchase.
Expozia is the light meter I built for my own film photography — a precise, no-nonsense instrument for getting exposure right on film.
It reads actual light through your phone's camera and gives you the settings you need, instantly.
What's inside:
Live or Static metering — read continuously as you move, or tap Measure to freeze a reading on screen. Reset it, or save it straight to your camera roll.
Three metering modes — matrix, center-weighted, and spot. Zone size is adjustable for center-weighted and spot; matrix analyzes the whole frame. A live luminance histogram shows the scene's tonal distribution.
A film logbook — frames organized by roll. Save each one with full settings (ISO, aperture, shutter, luminance histogram) — or as a clean frame. Film has no EXIF; here it does. So you learn how each stock behaves.
A manual flash calculator — guide number with LiDAR distance, or set the distance by hand.
ND compensation — meter through any ND filter, the math is handled for you.
Customize the app to your film camera — calibration, metering zones, and the exact ISO, aperture, and shutter ranges your gear has. Pick the focal length for your lens.
Expozia is built like a physical light meter: precise, durable, and yours. One-time purchase — no subscription, no ads, every feature included.
Made by a film photographer, for film photographers.
New in 1.2:
Live or Static metering — read continuously as you move, or tap Measure to freeze a reading on screen. Reset it, or save it straight to your camera roll.
Measure now includes a green/red confidence indicator, so you can see at a glance whether a reading is reliable.
Onboarding tooltips — a built-in guide that walks new users through the app.
The interface now adapts to a 90° rotation, making it more convenient to meter in vertical orientation.
Fixed an issue where saving to your camera roll could fail without full Photos access.
A number of stability improvements and bug fixes.
The developer, Egor Mojarovschii, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Egor Mojarovschii
- Size
- 4.2 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Egor Mojarovschii
