1. Home
  2. Image Converter
  3. Convert PEF to ORF

What is PEF?

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

What is ORF?

Olympus Raw Format (ORF) contains raw sensor data from Olympus OM-D, PEN, and other Olympus digital cameras.

When Should You Use PEF vs ORF?

Use PEF When...

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

Use ORF When...

Reach for ORF when your priority is olympus camera raw processing — its uncompromising quality ensures every detail is preserved.

PEF vs ORF: Key Differences

  • •PEF and ORF diverge on compression: lossless compression for the source, lossless compression for the target.
  • •Since both PEF and ORF use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •How transparency is handled: ORF supports transparency, so alpha information is preserved during conversion.
  • •PEF files are typically 15-45MB per photo while ORF files range 15-40MB per photo
  • •PEF is optimized for pentax camera post-processing while ORF is designed for olympus camera raw processing — choose based on your specific workflow needs

Advantages of PEF

  • ✓PEF uses lossless compression tailored for Pentax camera post-processing.
  • ✓PEF is supported natively on virtually every device, browser, and operating system.
  • ✓PEF files are bit-for-bit perfect, preserving every pixel and sample for professional work.
  • ✓PEF integrates seamlessly with all major creative tools and workflows.

Advantages of ORF

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

Common Use Cases for PEF to ORF 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 ORF Conversion

  • →When converting PEF to ORF, check whether ORF supports transparency — if not, your transparent areas will be filled with a solid color
  • →Use ORF 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 ORF formats in our detailed guide.

Troubleshooting PEF to ORF Conversion

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

Related Image Converters

All Image Formats

View all Image converters →

More Image tools

Convert to ORF →Convert from PEF →

Related Tools

Compress Images →

Convert PEF to ORF Online - Free & Fast

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

Image Converter

Upload or enter a URL to convert PEF to ORF instantly

Click to upload or drag & drop PEF file

or paste from clipboard

.pef,.PEF (max 100MB)

SSL EncryptedAuto-deleted in 1 hourProcessed securelyNo registration needed

Verifying security check…

About PEF and ORF

PEF

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

ORF

ORF (Olympus ORF raw) - Olympus Raw Format, raw image from Olympus cameras. Ideal for olympus camera raw processing.

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from pentax camera post-processing to olympus camera raw processing
File Size~15-40MB per photo after conversion

FAQs

Is converting PEF to ORF free?

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

How long does it take to convert PEF to ORF?

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

What is ORF best used for?

ORF is ideal for olympus camera raw processing. Olympus Raw Format, raw image from Olympus cameras

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

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

Related Tools

JPG to ORF
Convert JPG to ORF
JPG to PEF
Convert JPG to PEF
PNG to ORF
Convert PNG to ORF
PNG to PEF
Convert PNG to PEF
View all image converter converters
Tune output for this image conversion
80%
Best compressionBest quality