Lumina Meter
Photo & Video
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
The light meter film photographers have been waiting for. LiDAR distance, zone system, 15+ film stocks. Free for a limited time — $1.99 later. Zero data collection.
Lumina is a precision light meter designed for film photographers. Turn your iPhone into a professional-grade metering tool with real-time exposure analysis powered by Metal GPU rendering.
METERING MODES
- Spot: Precise single-point metering for critical exposure control
- Center-Weighted: Classic center-biased metering for balanced readings
- Matrix: Advanced 3D matrix metering with scene analysis, highlight protection, and film latitude awareness
- Distance: Real-time LiDAR depth measurement for zone focusing and hyperfocal calculations (Pro iPhones)
LIDAR DISTANCE
On Pro iPhones with LiDAR, Lumina measures real-time distance to your subject — right in the viewfinder. Invaluable for manual focus lenses, zone focusing, and nailing critical focus in the field.
ZONE SYSTEM
Real-time Ansel Adams Zone System display (Zone 0–X) lets you visualize exactly where your scene falls — from deep shadows to pure highlights.
EXPOSURE TOOLS
- Live histogram with luminance distribution
- False color overlay for instant exposure mapping
- Zebra stripes for highlight and shadow warnings
- Aperture priority, shutter priority, and manual modes
- ±3 EV compensation with third-stop precision
FILM STOCK PROFILES
Built-in presets for popular film stocks including Portra, Ektar, Tri-X, HP5+, Velvia, and more. Lumina adjusts metering behavior based on each film's dynamic range — slide films get aggressive highlight protection while negative films maximize shadow detail.
BUILT FOR FILM
- EV100 readout with 1/3 and 1/2 stop increments
- Full ISO, aperture, and shutter speed controls
- Calibration offset for matching your handheld meter
- Clean, dark interface designed for use in the field
PRIVACY FIRST
All camera and LiDAR data is processed entirely on-device. No analytics, no tracking, no accounts. Your data never leaves your iPhone.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
- New distance metering mode with real-time LiDAR depth measurement
- Redesigned onboarding tutorial
- Updated UI throughout
- Black camera fallback for cleaner appearance
The developer, QIWEN LIN, 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
- QIWEN LIN
- Size
- 4.1 MB
- Category
- Photo & Video
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 KL Studios