LiveMM

35mm Focal Length Viewfinder

Free · Designed for iPad

Real-time 35mm equivalent focal length and angle of view overlay on your viewfinder. Build your camera sense and recreate compositions like a film camera. --- Know your focal length. Every shot. LiveMM displays your real-time 35mm equivalent focal length and angle of view directly on the viewfinder — so you always know exactly what you're shooting. Whether you're a film photographer trying to match a composition on your phone, or someone who wants to develop a sharper eye for perspective, LiveMM speaks the language of real cameras. --- REAL-TIME FOCAL LENGTH OVERLAY As you zoom in or out, LiveMM instantly shows the 35mm equivalent focal length (e.g. 26mm) and angle of view (e.g. 77°) on screen. No lag. No guessing. HARDWARE-ACCURATE READINGS LiveMM reads the field of view directly from your iPhone's physical camera hardware using AVFoundation. The focal length you see is calculated from the actual optics of your device — not a rough estimate. LENS PRESET BUTTONS Instantly switch between your phone's physical lenses — 0.5×, 1×, 2×, and 3× — with a single tap. LiveMM automatically detects which lenses your device has at startup, so it works correctly on any iPhone without a device database. PINCH TO ZOOM Use standard pinch-to-zoom gestures for continuous zoom between lens presets. The overlay updates in real time throughout the entire zoom range, including digital zoom. PHOTO CAPTURE WITH EXIF DATA Capture photos directly in the app. The 35mm equivalent focal length is written into the photo's EXIF metadata, so your camera roll tells the full story of every shot. --- PERFECT FOR · Film and mirrorless camera photographers shooting with an iPhone · Photography students learning to see in focal lengths · Anyone who wants to understand what their phone's lenses actually see REQUIREMENTS · iPhone 12 or later · iOS 16.0 or later · Physical device required (camera features are not available in Simulator) ---

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Bug Fixes - Fixed intermittent crash on app launch (AppDelegate force unwrap) - Fixed crash when switching between background/foreground (camera session race condition) - Fixed loading screen freeze on iPad (camera engine premature deallocation) - Fixed inaccurate 35mm focal length on multi-lens devices (iPhone 12 Pro, etc.) - Fixed excessive digital zoom range on single-lens devices (iPad mini, etc.)

Version 1.0.1

The developer, haedong kim, 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

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    • Seller
      • haedong kim
    • Size
      • 17.4 MB
    • Category
      • Photo & Video
    • Compatibility
      Requires iOS 16.0 or later.
      • iPhone
        Requires iOS 16.0 or later.
      • iPad
        Requires iPadOS 16.0 or later.
      • Mac
        Requires macOS 13.0 or later and a Mac with Apple M1 chip or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2026 HAEDONG KIM
  • Developer Website
  • Privacy Policy

    • More by haedong kim