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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.
HEIF at a glance
HEIF
HEIF was developed by MPEG and built on the ISO Base Media File Format lineage, which helps explain why it feels more like a modern media container for images than a simple legacy bitmap file.
Format comparison
| Feature | SRF | HEIF |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2003 | 2015 |
| Inventor | Sony | Moving Picture Experts Group (MPEG) |
| 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 SRF
- Your source file is already in SRF.
- Preserve source expectations before exporting to HEIF.
- SRF is commonly used in image workflows.
When to use HEIF
- Your target workflow expects HEIF.
- Improve delivery compatibility with HEIF.
- HEIF is commonly used in image workflows.
FAQs
Why convert SRF to HEIF?
Convert to HEIF when the destination benefits from modern image containers that can preserve more than a single flat raster, such as advanced mobile-photo workflows or efficient high-quality storage.
It is a strong target in contemporary imaging ecosystems.
What changes when converting SRF to HEIF?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to HEIF removes camera raw data.
What should I review after converting SRF to HEIF?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.