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CDR at a glance
CDR
CorelDRAW was developed by Corel engineers Michel Bouillan and Pat Beirne in 1987 to bundle with Corel's desktop publishing systems. The inclusion of TrueType support in Windows 3.1 transformed CorelDRAW into a serious illustration program.
MEF at a glance
MEF
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 | CDR | MEF |
|---|---|---|
| File type | Vector | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1989 | 2005 |
| Inventor | Corel Corporation | Mamiya |
| 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 CDR
- Your source file is already in CDR.
- Preserve source expectations before exporting to MEF.
- CDR is commonly used in vector workflows.
When to use MEF
- Your target workflow expects MEF.
- Improve delivery compatibility with MEF.
- MEF is commonly used in image workflows.
FAQs
Why convert CDR to MEF?
Convert to MEF when preserving Mamiya camera originals or maintaining compatibility with medium-format photographic workflows that still expect that raw format.
It is appropriate for archive masters and non-destructive editing.
What changes when converting CDR to MEF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to MEF removes vector scaling.
What should I review after converting CDR to MEF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.