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PNM Raw at a glance
PNM Raw
PNM survived because engineers kept needing a no-drama raster family for scripts, fixtures, codecs, and image-processing experiments where the format should not be the hard part.
DRF at a glance
DRF
Digital photography fragmented into many manufacturer-specific raw formats because camera makers optimized for their own sensors, metadata, and software ecosystems rather than for one shared public raw standard.
Format comparison
| Feature | PNM Raw | DRF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 2005 |
| Inventor | Jef Poskanzer | Kodak |
| Status | active | proprietary |
| 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 | Not supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use PNM Raw
- Your source file is already in PNM Raw.
- Preserve source expectations before exporting to DRF.
- PNM Raw is commonly used in image workflows.
When to use DRF
- Your target workflow expects DRF.
- Improve delivery compatibility with DRF.
- DRF is commonly used in image workflows.
FAQs
Why convert PNM Raw to DRF?
Convert to DRF when compatibility with an older camera-specific raw library is required.
In most workflows today, DRF is a preservation or migration target rather than a preferred everyday format.
What changes when converting PNM Raw to DRF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to DRF adds camera raw data.
What should I review after converting PNM Raw to DRF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.