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CR2 in het kort
CR2
CR2 became the dominant Canon raw family through the long DSLR era, so huge real-world photo archives still depend on stable CR2 decoding and migration paths.
PPM in het kort
PPM
PBM, PGM, PPM, PNM, and later PAM come from the tool-centric tradition of keeping image interchange formats easy to parse, script, and transform.
Formaatvergelijking
| Kenmerk | CR2 | PPM |
|---|---|---|
| File type | Image | Image |
| Extensions |
|
|
| MIME type |
|
|
| Created year | 2004 | 1988 |
| Inventor | Canon | Jef Poskanzer / Netpbm lineage |
| Status | proprietary | active |
| Transparency | Niet ondersteund | Niet ondersteund |
| Animation | Niet ondersteund | Niet ondersteund |
| Primary use cases |
|
|
| Layer support | Niet ondersteund | Niet ondersteund |
| Vector scaling | Ondersteund | Niet ondersteund |
| Camera raw data | Ondersteund | Niet ondersteund |
| HDR support | Niet ondersteund | Niet ondersteund |
| Streaming ready | Niet ondersteund | Niet ondersteund |
Wanneer je elk formaat gebruikt
When to use CR2
- Your source file is already in CR2.
- Preserve source expectations before exporting to PPM.
- CR2 is commonly used in image workflows.
When to use PPM
- Your target workflow expects PPM.
- Improve delivery compatibility with PPM.
- PPM is commonly used in image workflows.
Veelgestelde vragen
Why convert CR2 to PPM?
Convert to PPM when a technical workflow needs a simple RGB raster format for processing, benchmarking, or intermediate conversion.
It is useful in command-line and research-oriented image pipelines.
What changes when converting CR2 to PPM?
This conversion changes how the format behaves in downstream tools and delivery environments.
Moving to PPM removes vector scaling. Moving to PPM removes camera raw data.
What should I review after converting CR2 to PPM?
Validate output quality on representative files and confirm the target format behaves correctly in the destination workflow.