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RAS at a glance
RAS
Before today's relatively small set of mainstream consumer image formats dominated everyday use, desktop software, workstations, GUI systems, and early graphics tools produced many specialized raster formats with local importance.
DPX at a glance
DPX
DPX inherits part of the motion-picture scanning and Kodak/Cineon lineage, then becomes formalized as a SMPTE exchange format for professional moving-image work.
Format comparison
| Feature | RAS | DPX |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1987 | 1994 |
| Inventor | Sun Microsystems | SMPTE / Kodak lineage |
| Status | legacy | active |
| Transparency | Not supported | Not supported |
| Animation | Not supported | Not supported |
| Primary use cases |
|
|
| Layer support | Not supported | Not supported |
| Vector scaling | Not supported | Not supported |
| Camera raw data | Not supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Supported |
When to use each format
When to use RAS
- Your source file is already in RAS.
- Preserve source expectations before exporting to DPX.
- RAS is commonly used in image workflows.
When to use DPX
- Your target workflow expects DPX.
- Improve delivery compatibility with DPX.
- DPX is commonly used in image workflows.
FAQs
Why convert RAS to DPX?
Convert to DPX when the destination is a color pipeline, VFX handoff, scanned-film workflow, or professional frame-sequence archive.
It is ideal for high-fidelity moving-image production and preservation.
What changes when converting RAS to DPX?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to DPX adds streaming delivery.
What should I review after converting RAS to DPX?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.