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EMF at a glance
EMF
Microsoft deprecated WMF in favour of EMF due to WMF's issues with device independence. EMF was later extended with EMF+ to support GDI+ drawing operations.
ORF at a glance
ORF
ORF belongs to the long Olympus digital-camera story, especially in the Four Thirds and Micro Four Thirds eras where portability and serious editing often coexisted.
Format comparison
| Feature | EMF | ORF |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1993 | 2003 |
| Inventor | Microsoft Corporation | Olympus (now OM System) |
| Status | active | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Supported | Not supported |
When to use each format
When to use EMF
- Your source file is already in EMF.
- Preserve source expectations before exporting to ORF.
- EMF is commonly used in vector workflows.
When to use ORF
- Your target workflow expects ORF.
- Improve delivery compatibility with ORF.
- ORF is commonly used in image workflows.
FAQs
Why convert EMF to ORF?
Convert to ORF when preserving Olympus camera originals or maintaining compatibility with an Olympus raw-photo workflow.
It is useful for archive masters and non-destructive photographic editing.
What changes when converting EMF to ORF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to ORF removes vector scaling.
What should I review after converting EMF to ORF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.