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PEF at a glance
PEF
Pentax raw workflows never dominated the mass market, but their persistence in enthusiast and specialist photo libraries gives PEF ongoing practical relevance.
PFM at a glance
PFM
These formats persist in engineering, compression research, and conversion-tool contexts where simple sample storage or adjunct technical representation is useful.
Format comparison
| Feature | PEF | PFM |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
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| Created year | 2006 | 1995 |
| Inventor | Pentax (now Ricoh) | Paul Debevec |
| Status | proprietary | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Supported | Not supported |
| HDR support | Not supported | Supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use PEF
- Your source file is already in PEF.
- Preserve source expectations before exporting to PFM.
- PEF is commonly used in image workflows.
When to use PFM
- Your target workflow expects PFM.
- Improve delivery compatibility with PFM.
- PFM is commonly used in image workflows.
FAQs
Why convert PEF to PFM?
Convert to PFM when high-precision floating-point image data must survive for rendering, HDR processing, or technical analysis.
It is useful as a working format in graphics and research pipelines.
What changes when converting PEF to PFM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PFM removes camera raw data. Moving to PFM adds HDR content.
What should I review after converting PEF to PFM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.