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PNG at a glance
PNG
PNG emerged in the mid-1990s as a web-friendly alternative to GIF, and the format later became part of the W3C standards stack.
SRF at a glance
SRF
Before ARW became the better-known Sony raw family, Sony's raw ecosystem already included older variants that modern tools still need to decode correctly.
Format comparison
| Feature | PNG | SRF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 1996 | 2003 |
| Inventor | PNG Development Group | Sony |
| Status | active | proprietary |
| 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 | Supported |
| HDR support | Not supported | Not supported |
| Streaming ready | Not supported | Not supported |
When to use each format
When to use PNG
- Your source file is already in PNG.
- Preserve source expectations before exporting to SRF.
- PNG is commonly used in image workflows.
When to use SRF
- Your target workflow expects SRF.
- Improve delivery compatibility with SRF.
- SRF is commonly used in image workflows.
FAQs
Why convert PNG to SRF?
Convert to SRF when preserving older Sony originals or keeping a legacy Sony raw library intact.
It is useful for archive recovery and compatibility workflows.
What changes when converting PNG to SRF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to SRF adds camera raw data.
What should I review after converting PNG to SRF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.