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JPM in het kort
JPM
JPEG 2000 arrived as a major standards effort to improve on classic JPEG, but its practical adoption concentrated in specialist domains rather than in the universal browser-and-camera role held by JPEG.
PEF in het kort
PEF
Pentax raw workflows never dominated the mass market, but their persistence in enthusiast and specialist photo libraries gives PEF ongoing practical relevance.
Formaatvergelijking
| Kenmerk | JPM | PEF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2000 | 2006 |
| Inventor | Joint Photographic Experts Group | Pentax (now Ricoh) |
| Status | active | proprietary |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Ondersteund | Niet ondersteund |
| Vector scaling | 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 JPM
- Your source file is already in JPM.
- Preserve source expectations before exporting to PEF.
- JPM is commonly used in image workflows.
When to use PEF
- Your target workflow expects PEF.
- Improve delivery compatibility with PEF.
- PEF is commonly used in image workflows.
Veelgestelde vragen
Why convert JPM to PEF?
Convert to PEF when preserving Pentax camera originals or maintaining a Pentax-oriented raw workflow.
It is useful for archive masters and editable photographic captures.
What changes when converting JPM to PEF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PEF removes layer support. Moving to PEF removes vector scaling. Moving to PEF adds camera raw data.
What should I review after converting JPM to PEF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.