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SR2 at a glance
SR2
Early Sony raw formats reflect the transitional period in which Sony was still establishing its photography ecosystem and raw compatibility story.
PGX at a glance
PGX
These formats persist in engineering, compression research, and conversion-tool contexts where simple sample storage or adjunct technical representation is useful.
Format comparison
| Feature | SR2 | PGX |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2003 | 2000 |
| Inventor | Sony | ISO/IEC (JPEG 2000 committee) |
| Status | proprietary | 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 | Supported | Not supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use SR2
- Your source file is already in SR2.
- Preserve source expectations before exporting to PGX.
- SR2 is commonly used in image workflows.
When to use PGX
- Your target workflow expects PGX.
- Improve delivery compatibility with PGX.
- PGX is commonly used in image workflows.
FAQs
Why convert SR2 to PGX?
Convert to PGX when a technical imaging or codec workflow expects grayscale component data in a simple specialist format.
It is useful for research, testing, and standards-oriented image processing.
What changes when converting SR2 to PGX?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PGX removes camera raw data.
What should I review after converting SR2 to PGX?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.