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What is PEF?

Pentax Electronic Format (PEF) contains raw sensor data from Pentax digital SLR and mirrorless cameras.

What is CR2?

Canon Raw v2 (CR2) is Canon's second-generation raw image format used by Canon EOS digital cameras for professional photography.

When Should You Use PEF vs CR2?

Use PEF When...

Reach for PEF when your priority is pentax camera post-processing — its uncompromising quality ensures every detail is preserved.

Use CR2 When...

Reach for CR2 when your priority is canon photography, professional raw editing — its uncompromising quality ensures every detail is preserved.

PEF vs CR2: Key Differences

  • •PEF and CR2 diverge on compression: lossless compression for the source, lossless compression for the target.
  • •Both formats share lossless compression, so quality behavior is similar across the two — file size differences come from algorithm efficiency rather than compression philosophy.
  • •Alpha channel support: CR2 lacks transparency support.
  • •Storage footprint: 15-45MB per photo for PEF vs 20-50MB per photo depending on camera for CR2.
  • •Primary audience: PEF is built for pentax camera post-processing scenarios, while CR2 focuses on canon photography, professional raw editing — pick the format that matches your output requirement.

Advantages of PEF

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

Advantages of CR2

  • ✓CR2 applies lossless compression specifically calibrated for Canon photography, professional raw editing.
  • ✓CR2 enjoys broad native support across operating systems, browsers, and creative tools alike.
  • ✓CR2 guarantees every bit of the original data survives — no approximations, no shortcuts.
  • ✓You will find CR2 support built into virtually every tool that handles Canon photography, professional raw editing — no plugins or converters needed.

Common Use Cases for PEF to CR2 Conversion

  • Mobile app UI assets
  • Product photography for marketplaces
  • Digital art portfolios
  • Brochure and flyer design
  • Newsletter graphics
  • Video thumbnail creation

Industry Applications

Brand ManagementContent ManagementMedical ImagingReal Estate PhotographyGame DevelopmentScientific Visualization

Best Practices for PEF to CR2 Conversion

  • →When converting PEF to CR2, check whether CR2 supports transparency — if not, your transparent areas will be filled with a solid color
  • →Use CR2 for maximum quality archival and PEF for lossless workflows
  • →Optimize images for web to reduce page load times — tools like our converter let you adjust quality settings before conversion
  • →Maintain original aspect ratio to avoid distortion during conversion
  • →Always keep a backup of your original files before converting
  • →Choose the appropriate quality settings for your specific use case

Related Article

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

Learn more about PEF and CR2 formats in our detailed guide.

Troubleshooting PEF to CR2 Conversion

  • !CR2 shows visible compression artifacts → lower the compression level or switch to a lossless variant
  • !The converted CR2 image looks washed out → the source PEF likely uses a wider color space than CR2 supports
  • !CR2 file is much larger than expected → check if the conversion preserved an unnecessarily high resolution
  • !Text in the converted CR2 looks fuzzy → text-heavy images benefit from higher quality settings or a different output format

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Convert PEF to CR2 Online - Free & Fast

Convert PEF files to CR2 online for free. High-quality conversion with no registration required.

Image Converter

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About PEF and CR2

PEF

PEF (Pentax PEF raw) - Pentax Electronic Format, raw format for Pentax cameras. Best for pentax camera post-processing.

CR2

CR2 (Canon CR2 raw) - Canon Raw v2, raw image format from Canon digital cameras. Ideal for canon photography, professional raw editing.

Format Comparison

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

FAQs

Is converting PEF to CR2 free?

Yes, GoConvertFile offers free conversion of PEF to CR2 for files up to 100MB. No registration required.

How long does it take to convert PEF to CR2?

Most PEF to CR2 conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.

What is CR2 best used for?

CR2 is ideal for canon photography, professional raw editing. Canon Raw v2, raw image format from Canon digital cameras

What file size should I expect after converting PEF to CR2?

File size after PEF to CR2 conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.

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