Negbase

Film Negative Converter

Only for Mac

Free · In‑App Purchases

Mac

Professional film inversion for macOS. Simple to use, precise when you need it. For anyone scanning their own film. Turn your color negative (C41) and black & white scans into positives. Whether from a digital camera, flatbed or even drum scanner — Negbase handles your TIFF, DNG and Camera RAW files effortlessly. No more tedious file prepping, no plugins required. Derived from motion picture film scanning. Built for photographers. Try Negbase for free. Exports are limited to 1500px. A one-time purchase unlocks full-resolution export, batch processing, custom resizing and professional scopes. HOW IT WORKS Negbase automatically detects film base and density range in your scan. Adjust exposure, contrast, temperature, tint, saturation and more with immediate visual feedback. Need more control? Select dmin and dmax areas manually, with per channel scaling. PRINTER LIGHTS Grade your images the way film labs do. CMY density keys for natural color correction. CAMERA RAW SUPPORT¹ Negbase reads RAW files from Canon, Nikon, Sony, Fujifilm, Leica, Hasselblad and others. NARROWBAND SCANS Using a narrowband LED light source? Negbase includes a correction matrix to reduce color shifts, giving a cleaner starting point without full calibration. Compatible with DNG and RAW files only. PRINT FILM EMULATION  Use the built-in print film LUT or your own for a more characteristic, film-like rendering straight from Negbase. Features • Supports TIFF, DNG and Camera RAW (CR3, ARW, RAF, NEF, ORF, RW2, 3FR, and others)¹ • Handles images up to 16K resolution (16384 x 16384 px) • Real-time preview • Fully color managed, color-accurate preview • Metadata passthrough • Copy/paste adjustments across frames • Export to TIFF, JPG and HEIC • Open up to 80 frames at once² • Manual dmin and dmax control • Cineon-based film inversion • Use the built-in print film LUT or your own • Crop, rotate and flip • Exposure, contrast, saturation, temperature, tint, tone mapping • Printer Lights • Professional scopes (RGB parade, waveform and vectorscope) • Keyboard shortcuts ¹ Compressed RAW and in-camera crop may not be supported for your camera model. ² Maximum number of images depends on available memory. Preview resolution is automatically optimized for performance.

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Bug Fixes - Fixed loading issues with certain RAW files - Fixed export issues with grayscale and LAB TIFF files

Version 1.3.1

The developer, Fabian Stolba, 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.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

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    Information

    Seller
    • Fabian Stolba
    Size
    • 3.4 MB
    Category
    • Photo & Video
    Compatibility
    Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    • Mac
      Requires macOS 14.6 or later and a Mac with Apple M1 chip or later.
    Languages
    • English and Simplified Chinese
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 Fabian Stolba
  • Developer Website
  • Privacy Policy

    • Supports

    • Family Sharing

      Some in-app purchases and subscriptions may be shareable with your family group when Family Sharing is enabled. Learn More