Specialized FormatSince 2003

EXR

OpenEXR

Extension
.exr
Developer
Industrial Light & Magic
Compression
Lossless
Year
2003

What is EXR?

OpenEXR is a high dynamic range image format created by Industrial Light & Magic (ILM) for use in visual effects and film production. It supports 16-bit and 32-bit floating-point pixels, multiple channels, deep image compositing, and multiple views for stereoscopic content. EXR has become the industry standard for VFX compositing and film production pipelines.

Key Features

Lossless Compression
Perfect quality preservation
Transparency
Supports alpha channel
No Animation
Static images only

Common Use Cases

Visual effects compositing
Film and television production
3D rendering output
Deep compositing pipelines
HDR image processing
Color grading and post-production

Advantages

  • Industry standard for VFX and film production
  • Supports 16-bit and 32-bit floating-point pixels
  • Multiple arbitrary channels
  • Deep image compositing support
  • Lossless and lossy compression options
  • Supports multi-view for stereoscopic content

Limitations

  • Very large file sizes
  • Not suitable for web use
  • Requires specialized software to view
  • Complex format specification
  • Overkill for standard photography

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