MMegaConvert

Convert ARW to EXR

Free online ARW to EXR converter. No signup required.

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Max file size: 100 MB

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How to Convert ARW to EXR

Follow these simple steps to convert your file in seconds.

  1. 1

    Upload your .arw file

    Drag and drop your .arw file into the upload area, or click "Browse" to select it from your device. Your file is uploaded securely and processed on our servers.

  2. 2

    Click "Convert to EXR"

    Once your file is uploaded, press the convert button to start the ARW to EXR conversion process.

  3. 3

    Wait for the conversion to complete

    The conversion usually takes just a few seconds. You can see the progress in real time while your file is being processed.

  4. 4

    Download your converted .exr file

    When the conversion is finished, click the download button to save your new .exr file. The file is ready to use immediately.

Understanding ARW and EXR Formats

Learn about the source and target file formats to understand what happens during conversion.

Source Format

Sony Raw Image

image/x-sony-arw

ARW (Alpha Raw) is Sony's proprietary raw image format used by Sony Alpha mirrorless and DSLR cameras. Based on the TIFF specification, it stores unprocessed 12-bit or 14-bit sensor data with complete metadata. ARW files can be either uncompressed or use Sony's lossy or lossless compressed raw encoding.

Advantages

  • Preserves full unprocessed sensor data for maximum post-processing latitude
  • Supports both compressed and uncompressed raw storage options
  • Well-supported by major photo editing applications including Lightroom and Capture One

Limitations

  • Proprietary format with no publicly available specification
  • Large file sizes, especially in uncompressed mode
  • Requires raw-capable software for viewing and editing

Common Uses

  • Professional photography with Sony Alpha series cameras
  • Raw photo editing and non-destructive development
  • High-quality archival of photographic captures

Target Format

OpenEXR Image

image/x-exr

OpenEXR is a high dynamic range raster image format developed by Industrial Light & Magic for use in visual effects and motion picture production. It supports 16-bit and 32-bit floating-point pixels, multiple compression methods, arbitrary image channels, and multi-part files. OpenEXR is the industry standard for storing intermediate and final rendered frames in VFX pipelines.

Advantages

  • Industry-standard 16-bit and 32-bit floating-point precision for VFX work
  • Supports an arbitrary number of named channels and deep image data
  • Multiple lossless and lossy compression options including PIZ and DWAA

Limitations

  • Large file sizes even with compression, especially for 32-bit data
  • Not supported by web browsers or most consumer image viewers
  • Complex format specification requires specialized libraries to read and write

Common Uses

  • Visual effects compositing and intermediate renders in film production
  • 3D rendering output for lighting and shading passes
  • HDR image storage for professional color grading and post-production

Frequently Asked Questions

Common questions about converting ARW to EXR.

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