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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 ARW?

Sony Alpha Raw (ARW) is Sony's proprietary raw image format containing unprocessed sensor data from Sony Alpha and Cyber-shot cameras.

When Should You Use IIQ vs ARW?

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 ARW When...

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

IIQ vs ARW: Key Differences

  • •IIQ uses lossless compression while ARW uses lossless compression — both take the same approach to file size management.
  • •Since both IIQ and ARW use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •Alpha channel support: ARW lacks transparency support.
  • •IIQ files are typically 50-150MB per image from medium-format backs while ARW files range 20-40MB per photo
  • •Primary audience: IIQ is built for professional studio photography, digital back capture scenarios, while ARW focuses on sony camera post-processing, professional editing — pick the format that matches your output requirement.

Advantages of IIQ

  • ✓IIQ applies lossless compression specifically calibrated for Professional studio photography, digital back capture.
  • ✓IIQ enjoys broad native support across operating systems, browsers, and creative tools alike.
  • ✓IIQ guarantees every bit of the original data survives — no approximations, no shortcuts.
  • ✓You will find IIQ support built into virtually every tool that handles Professional studio photography, digital back capture — no plugins or converters needed.

Advantages of ARW

  • ✓At its core, ARW relies on lossless encoding — a design choice that makes it perfect for Sony camera post-processing, professional editing.
  • ✓You won't run into compatibility issues with ARW — it's a universal standard across platforms.
  • ✓File size management with ARW: larger files guaranteed to match the original exactly.
  • ✓Every major application in the Sony camera post-processing, professional editing space supports ARW natively.

Common Use Cases for IIQ to ARW Conversion

  • Email marketing campaigns
  • Presentation graphics
  • Blog and article illustrations
  • Mobile app UI assets
  • Product photography for marketplaces
  • Digital art portfolios

Industry Applications

Digital ArtUI/UX DesignAdvertisingBrand ManagementContent ManagementMedical Imaging

Best Practices for IIQ to ARW Conversion

  • →Before converting IIQ to ARW, 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 ARW — you cannot recover detail lost during lossy compression
  • →Check the color profile: IIQ images may use a wider gamut than ARW 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 ARW formats in our detailed guide.

Troubleshooting IIQ to ARW Conversion

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

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About IIQ and ARW

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.

ARW

ARW (Sony ARW raw) - Sony Alpha Raw, proprietary camera raw format for Sony cameras. Ideal for sony camera post-processing, professional editing.

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from professional studio photography, digital back capture to sony camera post-processing, professional editing
File Size~20-40MB per photo after conversion

FAQs

Is converting IIQ to ARW free?

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

How long does it take to convert IIQ to ARW?

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

What is ARW best used for?

ARW is ideal for sony camera post-processing, professional editing. Sony Alpha Raw, proprietary camera raw format for Sony cameras

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

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

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