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MEF at a glance
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.
3FR at a glance
3FR
Convert to 3FR when preserving original Hasselblad captures or handing files into a Hasselblad-oriented raw workflow.
It is useful for archive retention, color-critical processing, and studio pipelines that need untouched sensor data.
Format comparison
| Feature | MEF | 3FR |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Compression / quality | raw | raw |
| File size characteristics | large | large |
| Compatibility | limited | limited |
| Editability | high | high |
| Created year | 2005 | 2002 |
| Inventor | Mamiya | Hasselblad |
| Status | proprietary | proprietary |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Common software |
|
|
| Archival suitability | strong | strong |
| Metadata handling | rich | rich |
| Delivery profile | limited | limited |
| Workflow fit | source | source |
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Supported | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use MEF
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage image data for later interpretation.
When to use 3FR
- capture ingest
- editing
- web or print delivery
- Preserve capture-stage sensor information.
FAQs
Why convert MEF to 3FR?
Convert to 3FR when preserving original Hasselblad captures or handing files into a Hasselblad-oriented raw workflow.
It is useful for archive retention, color-critical processing, and studio pipelines that need untouched sensor data.
What changes when converting MEF to 3FR?
This conversion changes how the format behaves in downstream tools and delivery environments.
What should I review after converting MEF to 3FR?
Check the exported file for Compatibility often depends on vendor or decoder support.; They are source formats, not publication-ready outputs.; Public technical documentation is uneven across manufacturers..