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What is IIQ?

Phase One IIQ is a professional medium-format raw format used by Phase One digital backs, delivering exceptional image quality for commercial photography.

What is RAW?

Camera RAW is a file format containing unprocessed sensor data captured directly from a digital camera sensor, providing maximum flexibility for professional photo editing.

When Should You Use IIQ vs RAW?

Use IIQ When...

Reach for IIQ when your priority is professional studio photography, digital back capture — its uncompromising quality ensures every detail is preserved.

Use RAW When...

Reach for RAW when your priority is professional photography, post-processing, editing — its uncompromising quality ensures every detail is preserved.

IIQ vs RAW: Key Differences

  • •The core technical difference: IIQ relies on lossless compression whereas RAW uses lossless compression.
  • •Neither format changes compression philosophy — both are lossless compression — so any size differences are due to encoding efficiency, not a shift in quality approach.
  • •Transparency: N/A - RAW is for photographs only
  • •File sizes: IIQ files typically range 50-150MB per image from medium-format backs and RAW files 20-50MB per photo depending on camera.
  • •Primary audience: IIQ is built for professional studio photography, digital back capture scenarios, while RAW focuses on professional photography, post-processing, editing — pick the format that matches your output requirement.

Advantages of IIQ

  • ✓IIQ compresses data using lossless methods, keeping file sizes manageable for Professional studio photography, digital back capture.
  • ✓Industry-wide support means IIQ files open anywhere — from legacy systems to the latest devices.
  • ✓Lossless quality makes IIQ the gold standard for archival and master copies.
  • ✓From Adobe Photoshop to open-source alternatives, IIQ works out of the box.

Advantages of RAW

  • ✓The lossless nature of RAW means file sizes stay reasonable while handling Professional photography, post-processing, editing efficiently.
  • ✓From mobile devices to enterprise servers, RAW is recognized and supported everywhere.
  • ✓The trade-off for RAW's perfection is larger files — but for archival work, it is worth every megabyte.
  • ✓RAW is a first-class citizen in all major software ecosystems, from creative suites to development environments.

Common Use Cases for IIQ to RAW Conversion

  • Graphic design projects
  • E-commerce product images
  • Email marketing campaigns
  • Presentation graphics
  • Blog and article illustrations
  • Mobile app UI assets

Industry Applications

Print PublishingE-commerceDigital ArtUI/UX DesignAdvertisingBrand Management

Best Practices for IIQ to RAW Conversion

  • →Before converting IIQ to RAW, decide whether you need maximum quality or smallest file size — this determines which format truly fits
  • →Save a master copy in a lossless format before converting to RAW — you cannot recover detail lost during lossy compression
  • →Check the color profile: IIQ images may use a wider gamut than RAW supports, causing a visible shift after conversion
  • →Resize images to the final display dimensions before converting — this avoids unnecessary processing of oversized files
  • →Run a single test conversion first to verify quality meets your standards
  • →Strip unnecessary metadata to reduce file size after conversion

Related Article

JPG vs PNG vs WebP: Which Image Format Should You Use?

Learn more about IIQ and RAW formats in our detailed guide.

Troubleshooting IIQ to RAW Conversion

  • !Converting IIQ to RAW gives blurry output → increase the quality setting before conversion
  • !Colors look different in RAW than IIQ → check color profile mismatch (sRGB vs Adobe RGB)
  • !File size changed more than expected → RAW uses different compression, file size differences of 2-5x are normal
  • !Transparent areas in IIQ turned white in RAW → RAW may not support transparency

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Convert IIQ files to RAW online for free. High-quality conversion with no registration required.

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About IIQ and RAW

IIQ

IIQ (Phase One IIQ raw) - Phase One IIQ, raw format from Phase One medium-format cameras. Best for professional studio photography, digital back capture.

RAW

RAW (Camera RAW images) - Camera RAW - uncompressed sensor data from digital cameras. Ideal for professional photography, post-processing, editing.

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from professional studio photography, digital back capture to professional photography, post-processing, editing
File Size~20-50MB per photo depending on camera after conversion

FAQs

Is converting IIQ to RAW free?

Yes, GoConvertFile offers free conversion of IIQ to RAW for files up to 100MB. No registration required.

How long does it take to convert IIQ to RAW?

Most IIQ to RAW conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is RAW best used for?

RAW is ideal for professional photography, post-processing, editing. Camera RAW - uncompressed sensor data from digital cameras

What file size should I expect after converting IIQ to RAW?

File size after IIQ to RAW conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.

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