F
About
Light Meter - Film Exposure is a purpose-built iOS application designed to make exposure calculation intuitive and accurate for analog film photographers. Whether you shoot 35mm, medium format, or large format, this app functions as a reliable incident and reflective light meter right from your iPhone or iPad. The app supports both aperture-priority and shutter-priority metering modes, directly displaying EV (Exposure Value) readings that are easily transferable to any manual film camera. A built-in database of popular film stocks lets you select your loaded emulsion instantly, removing the need to manually input ISO values each session. For creative photographers working with neutral density filters or long exposures, the app supports ND filter parameter input and automatically applies reciprocity failure correction — with refined data for Kodak and Fujifilm stocks — ensuring accurate results even in low-light situations. The Push/Pull feature allows adjustment of your film's exposure index from −1 to +3 stops, supporting advanced development techniques without extra calculation. A built-in photography log lets you photograph your scene and automatically record all metering data for post-session review and analysis. With a clean, intuitive UI refined for iOS 26 and Liquid Glass design, the app is ideal for hobbyists learning film photography as well as seasoned analog shooters who want a reliable digital metering companion. The developer collects zero user data, making it a privacy-respecting tool for all photographers.
Key Features
- Aperture & Shutter-Priority Metering: Accurately meters scenes in both aperture-priority and shutter-priority modes, displaying EV values directly compatible with any manual film camera.
- Built-in Film Stock Library: Select from a curated list of popular film stocks to instantly set the correct ISO, eliminating manual entry and reducing shooting errors.
- ND Filter & Reciprocity Compensation: Input ND filter parameters for long-exposure scenarios, with automatic reciprocity failure correction using refined Kodak and Fujifilm data.
- Push/Pull Exposure Index Adjustment: Adjust your film's exposure index from −1 to +3 stops to plan push or pull film development before or during a shoot.
- Photography Log: Capture scene photos with automatically recorded metering data for easy post-session review, analysis, and learning.
Use Cases
- Film photographers using manual cameras without built-in meters to calculate correct exposure in varied lighting conditions.
- Long-exposure photography with ND filters requiring accurate shutter speed calculation and reciprocity failure correction.
- Photographers planning push or pull film development who need to adjust their exposure index before shooting.
- Beginners learning film photography who want an intuitive tool to understand EV values, aperture, and shutter speed relationships.
- Analog photography enthusiasts logging and reviewing their metering decisions to improve technique over time.
Pros
- Purpose-Built for Film Photography: Designed exclusively for analog shooters, with features like film stock selection, reciprocity correction, and EV display that digital camera apps lack.
- Privacy-Respecting: The developer collects absolutely no data from users, making it one of the most privacy-friendly tools in its category.
- Actively Maintained: Regular updates include algorithm improvements, iOS compatibility fixes, and new features like Liquid Glass UI and reciprocity compensation.
- Free to Download: Core metering functionality is available at no cost, with optional in-app purchases for advanced features.
Cons
- iOS Only: Available exclusively on iPhone and iPad; Android users have no access, and macOS support is unverified.
- Niche Use Case: Useful only for film photographers — digital camera shooters or videographers will find no benefit from this app.
- Small User Base: With only 11 ratings on the App Store, community support and third-party resources are limited compared to more mainstream photography apps.
Frequently Asked Questions
What is aperture-priority metering?
Aperture-priority metering lets you set your desired aperture (f-stop), and the app calculates the correct shutter speed needed for a proper exposure given the current lighting conditions.
Does this app work with any film camera?
Yes. The app displays EV values that are universally compatible with any manual film camera, regardless of brand or format (35mm, medium format, large format).
What is reciprocity compensation and why does it matter?
When film is exposed for longer than about 1 second, it loses sensitivity in a non-linear way (reciprocity failure). The app automatically corrects long-exposure times using refined data for Kodak and Fujifilm stocks so your exposures remain accurate.
Is the app free?
Yes, the app is free to download on the App Store with optional in-app purchases to unlock additional features.
Does the app collect any personal data?
No. The developer, Moegi Co., Ltd., has confirmed that no data is collected from users of this app.
