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What is FFF?

FFF (image/x-hasselblad-fff) uses lossless compression optimized for medium format photography, hasselblad post-processing. Imacon/Hasselblad 3F RAW - Hasselblad digital back raw format

What is PEF?

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

When Should You Use FFF vs PEF?

Use FFF When...

Reach for FFF when your priority is medium format photography, hasselblad post-processing — its uncompromising quality ensures every detail is preserved.

Use PEF When...

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

FFF vs PEF: Key Differences

  • •FFF uses lossless compression while PEF uses lossless compression — both take the same approach to file size management.
  • •Since both FFF and PEF use lossless compression, the quality characteristics are comparable — differences in file size come down to how efficiently each format implements compression.
  • •Alpha channel support: PEF lacks transparency support.
  • •File sizes: FFF files typically range N/A and PEF files 15-45MB per photo.
  • •FFF is optimized for medium format photography, hasselblad post-processing while PEF is designed for pentax camera post-processing — choose based on your specific workflow needs

Advantages of FFF

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

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.

Common Use Cases for FFF to PEF 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 FFF to PEF Conversion

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

Troubleshooting FFF to PEF Conversion

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

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Convert FFF to PEF Online - Free & Fast

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

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About FFF and PEF

FFF

FFF (FFF) - Imacon/Hasselblad 3F RAW - Hasselblad digital back raw format. Best for medium format photography, hasselblad post-processing.

PEF

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

Format Comparison

CompressionLossless → Lossless
TransparencySupported
Use CaseConvert from medium format photography, hasselblad post-processing to pentax camera post-processing
File Size~15-45MB per photo after conversion

FAQs

Is converting FFF to PEF free?

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

How long does it take to convert FFF to PEF?

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

What is PEF best used for?

PEF is ideal for pentax camera post-processing. Pentax Electronic Format, raw format for Pentax cameras

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

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

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