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PGM Raw in het kort
PGM Raw
The raw PGM branch reflects the practical evolution of Netpbm-style tool formats: keep the tiny header and easy parsing, but move the pixel raster into a binary form that is much more usable for real data sizes.
CRW in het kort
CRW
Early Canon digital-camera workflows used raw formats like CRW before the later EOS raw families stabilized around CR2 and then CR3.
Formaatvergelijking
| Kenmerk | PGM Raw | CRW |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1988 | 2000 |
| Inventor | Jef Poskanzer | Canon |
| Status | active | proprietary |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Niet ondersteund | Niet ondersteund |
| Vector scaling | Niet ondersteund | Niet ondersteund |
| Camera raw data | Niet ondersteund | Ondersteund |
| HDR support | Niet ondersteund | Niet ondersteund |
| Streaming ready | Niet ondersteund | Niet ondersteund |
Wanneer je elk formaat gebruikt
When to use PGM Raw
- Your source file is already in PGM Raw.
- Preserve source expectations before exporting to CRW.
- PGM Raw is commonly used in image workflows.
When to use CRW
- Your target workflow expects CRW.
- Improve delivery compatibility with CRW.
- CRW is commonly used in image workflows.
Veelgestelde vragen
Why convert PGM Raw to CRW?
Convert to CRW when maintaining compatibility with older Canon raw libraries or recovering historical camera originals.
In most current workflows it is a source to preserve or migrate, not a preferred new output format.
What changes when converting PGM Raw to CRW?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to CRW adds camera raw data.
What should I review after converting PGM Raw to CRW?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.