Negative Film Scanner

Lumbini mines

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About this app

Convert your 35mm, 120, and medium format film negatives into vibrant, high-resolution positive digital photos in real time.

Negative Film Scanner transforms your Android device into a physics-accurate film inversion laboratory. Powered by high-speed OpenCV computer vision processing, the app automatically neutralizes orange film base masks, balances color channels, and inverts color negatives, black & white negatives, and positive slide film instantly on your screen.

KEY FEATURES:
📷 REAL-TIME LIVE VIEWFINDER • Live preview of inverted positive photographs directly on your camera screen. • Instant real-time processing powered by hardware-accelerated OpenCV algorithms.

🎞️ POPULAR FILM STOCK PRESETS • Built-in authentic color profiles tailored for popular film stocks, including Kodak Gold, Kodak Portra, Fuji Superia, B&W Monochrome, and Slide Positive. • Instant color mask calibration tailored to each film emulsion type.

🎯 ALEX BURKE MANUAL INVERSION & 5x5 BASE SAMPLING • Precision 5x5 pixel neighborhood eyedropper sampler for accurate orange base mask neutralization. • Independent Red, Green, and Blue channel curve gain controls for manual color balancing. • Percentile-clipped histogram contrast auto-leveling.

📊 LIVE RGB & LUMA HISTOGRAM GRAPH • Real-time 4-channel RGB and Luma (luminance) histogram display with smooth 5-point Gaussian curve smoothing. • Square-root scale normalization for enhanced shadow, midtone, and highlight visibility.

📁 STORAGE ACCESS FRAMEWORK (SAF) IMPORT • Import existing negative photos directly from your device gallery or cloud files using Android Storage Access Framework. • Apply full live color inversion, curve adjustments, and base sampling to imported negative images.

📸 FULL-RESOLUTION CAPTURE & EXIF METADATA • Capture high-resolution full-sensor scans (12MP / 48MP) with maximum clarity. • Embedded EXIF metadata tags including film stock profile info and processing software.

🔒 100% PRIVATE & ON-DEVICE • All image processing occurs 100% locally on your device. Your photos are never uploaded or transmitted to any external server.