What is CR2?

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

What is PEF?

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

When Should You Use CR2 vs PEF?

CR2 vs PEF: Key Differences

• •CR2 uses lossless compression while PEF uses lossless compression — both take the same approach to file size management.
• •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
• •File sizes: CR2 files typically range 20-50MB per photo depending on camera and PEF files 15-45MB per photo.
• •Primary audience: CR2 is built for canon photography, professional raw editing scenarios, while PEF focuses on pentax camera post-processing — pick the format that matches your output requirement.

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.

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.

Common Use Cases for CR2 to PEF Conversion

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

Industry Applications

Best Practices for CR2 to PEF Conversion

• →When converting CR2 to PEF, check whether PEF supports transparency — if not, your transparent areas will be filled with a solid color
• →Use PEF for maximum quality archival and CR2 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

Troubleshooting CR2 to PEF Conversion

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

Related Image Converters

All Image Formats

More Image tools

Related Tools