Evios: Light Meter for Film

Reflected Exposure & EV Meter

Only for iPhone

Free

iPhone

Evios is a professional-grade reflected-light meter that provides precise exposure readings normalized to EV100. Designed for photographers who need a dependable reference for manual film or digital cameras, Evios offers full transparency into your device's auto-exposure data. Key Features: Live & Manual Modes: Meter automatically using your camera sensor or input EV values manually for "what-if" scenarios. Standardized EV100: View brightness as a single, standardized exposure value (EV) normalized to ISO 100. Advanced Transparency: The Advanced panel reveals live shutter speed, aperture, and ISO reported by the camera, showing exactly how the EV is derived. Minimalist Design: A high-contrast, distraction-free interface built for quick adjustments in any lighting condition. How to Use: Point the camera at your subject to fill the frame. Adjust the ISO and Aperture sliders to find your desired settings. Evios calculates the perfect shutter speed instantly. Privacy First: Evios uses the camera strictly to measure ambient light. No photos or videos are ever captured, stored, or transmitted.

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Manual Mode: You can now switch to manual EV input at any time, even when the camera is available. Redesigned Advanced Panel: The hardware data view now expands to fill the slider container for improved legibility. Compact Manual Interface: We have tightened the layout for ISO and Aperture sliders to provide more vertical space for manual adjustments. UI Polish: Removed the particle animations for a cleaner aesthetic and updated the Info Panel with a modern segmented picker for mode selection. Streamlined Experience: Removed legacy logging features to focus purely on the metering experience.

The developer, Thor Morten Smerud, 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

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

    • Seller
      • Thor Morten Smerud
    • Size
      • 2.5 MB
    • Category
      • Photo & Video
    • Compatibility
      Requires iOS 17.0 or later.
      • iPhone
        Requires iOS 17.0 or later.
    • Languages
      • English
    • Age Rating
      4+
    • Copyright
      • © 2025 Thor Morten Smerud