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CR3 at a glance
CR3
CR3 marks Canon's move into a newer raw-file generation as mirrorless and later-camera workflows evolved beyond the long CR2 era.
FITS at a glance
FITS
FITS became a durable scientific standard because observatories, spacecraft, and analysis tools needed a stable interchange format that outlived individual instruments and software stacks.
Format comparison
| Feature | CR3 | FITS |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2018 | 1981 |
| Inventor | Canon | NASA / astronomical data community |
| 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 CR3
- Your source file is already in CR3.
- Preserve source expectations before exporting to FITS.
- CR3 is commonly used in image workflows.
When to use FITS
- Your target workflow expects FITS.
- Improve delivery compatibility with FITS.
- FITS is commonly used in image workflows.
FAQs
Why convert CR3 to FITS?
Convert to FITS when preserving scientific image data, observation metadata, or instrument-derived captures for astronomy and research workflows.
It is the right target when measurement context matters as much as the picture itself.
What changes when converting CR3 to FITS?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to FITS removes camera raw data.
What should I review after converting CR3 to FITS?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.