FilmMeter

Professional iOS Light Meter for Film Photography

Precision meets tradition. FilmMeter combines cutting-edge machine learning with the timeless art of film photography, delivering professional-grade exposure calculations in a beautifully crafted iOS app.

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## Why FilmMeter? FilmMeter isn't just another light meter app. It's a precision instrument designed by film photographers, for film photographers. Every feature has been carefully crafted to enhance your workflow while maintaining the authentic spirit of analog photography.
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Precision Metering

Real-time exposure measurement using iPhone's advanced camera sensors with support for 1/3, 1/2, and full stop increments. Professional-grade calculations optimized specifically for film characteristics.

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Intelligent Scene Detection

AI-powered scene recognition using our custom-trained CoreML model with automatic exposure compensation. Hybrid detection combines histogram analysis with machine learning for optimal results in any shooting environment.

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LiDAR Integration

Advanced distance measurement for depth of field calculations on iPhone 12 Pro and later. ARKit-powered real-time tracking enhances focus distance accuracy.

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Film Stock Database

Comprehensive database of popular film stocks including Portra 800, CineStill 800T, Phoenix 200, and many more. Automatic exposure compensation with precise characteristic adjustments for both color negative and slide films.

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Metering History

Session-based records with location data and photo attachments. Export capabilities for external analysis and workflow integration.

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Darkroom Aesthetic

Minimalist red-black-white design inspired by traditional darkroom photography. Interface prioritizes functionality while maintaining visual elegance.

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Reciprocity Compensation

Automatic long exposure compensation for reciprocity failure. Calculates actual exposure time based on each film stock's unique characteristics for exposures beyond 1 second.

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Rangefinder Focus

Classic rangefinder-style focus assist inspired by legendary Leica cameras. Intuitive split-image focusing experience combined with modern LiDAR precision.

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Depth of Field Scale

Visual depth of field calculator with format-specific circle of confusion. See your near and far focus limits in real-time for 35mm, medium format, and large format.

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CSV Export

Export your complete metering history with full metadata including roll name, film format, stock, status, dates, and personal notes for external analysis and archiving.

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Film Roll Management

Comprehensive film roll tracking with intelligent status management. Organize shots by roll, track exposure counts, and manage your film inventory efficiently.

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Film Counter

Classic mechanical counter display inspired by iconic Rollei and Leica designs. Authentic frame counting experience for both 135 and 120 formats.

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Medium Format Support

Full 120 medium format support with accurate frame counters for 6x4.5, 6x6, 6x7, and 6x9 formats. Professional-grade metering for your medium format workflow.

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## Technical Excellence

Platform Requirements

  • iOS 15.0 or later - Modern iOS features and performance
  • iPhone 12 Pro or later recommended - Full LiDAR functionality
  • Camera access required - Essential for exposure measurement
  • Location services optional - Enhances metering records
  • ~50MB storage - Includes CoreML models and resources

Core Technologies

  • AVFoundation - Professional camera sensor access
  • ARKit & LiDAR - Precise distance measurement
  • CoreML & Vision - On-device scene recognition
  • SwiftUI - Native iOS interface
  • Combine - Reactive state management
## Design Philosophy > "Every element serves the photographer. Every interaction respects the craft." FilmMeter embraces the aesthetic and principles of traditional darkroom photography. The red-black-white color scheme isn't just beautifulโ€”it's functional, ensuring critical exposure information remains clearly visible in all lighting conditions. The interface follows Apple's Human Interface Guidelines while incorporating the tactile, deliberate nature of film photography. Every tap, swipe, and gesture feels purposeful, just like the careful consideration that goes into every frame of film. ## Film Stock Database / ่ƒถ็‰‡ๆ•ฐๆฎๅบ“ Explore our comprehensive database of 21 film stocks with detailed specifications, reciprocity failure data, and shooting characteristics โ€” all extracted from FilmMeter's built-in film library.
Browse Film Stocks โ†’ Reciprocity Guide Exposure Triangle Guide
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Support & Information

Everything you need to know about FilmMeter's privacy practices and support resources.

FilmMeter - Where traditional film photography meets modern precision.