BMP vs Sigma RAW: Which Should You Use?
Side-by-side comparison of BMP and Sigma RAW image formats — features, pros, cons, and conversion options.
BMP is best for Simple uncompressed images in Windows applications. Sigma RAW is best for Professional photography with Sigma cameras using Foveon sensor.
Quick Verdict
- ✓ Simple uncompressed format
- ✓ No quality loss
- ✓ Universal Windows support
- ✗ Extremely large file size
- ✓ Foveon sensor full data
- ✓ Unique color science
- ✓ No Bayer interpolation
- ✗ Very large files
Specs Comparison
Side-by-side technical comparison of BMP and Sigma RAW
| Feature | BMP | Sigma RAW |
|---|---|---|
| Category | Image | Image |
| Year Introduced | 1986 | 2002 |
| MIME Type | image/bmp | image/x-sigma-x3f |
| Extensions | .bmp | .x3f |
| Animation | ✗ | ✗ |
| Hdr | ✗ | ✓ |
| Lossless | ✓ | ✓ |
| Lossy | ✗ | ✗ |
| Max Color Depth | 32-bit | 12-bit |
| Transparency | ✗ | ✗ |
Pros & Cons
BMP
- ✓ Simple uncompressed format
- ✓ No quality loss
- ✓ Universal Windows support
- ✗ Extremely large file size
- ✗ No transparency
- ✗ No compression
Sigma RAW
- ✓ Foveon sensor full data
- ✓ Unique color science
- ✓ No Bayer interpolation
- ✗ Very large files
- ✗ Sigma cameras only
- ✗ Foveon sensor-specific format
When to Use Each
Choose BMP when...
- You need files optimized for Simple uncompressed images in Windows applications
- Simple uncompressed format
- No quality loss
- You need lossless quality
Choose Sigma RAW when...
- You need files optimized for Professional photography with Sigma cameras using Foveon sensor
- Foveon sensor full data
- Unique color science
- You need lossless quality
How to Convert
Convert between BMP and Sigma RAW for free on ChangeThisFile
Frequently Asked Questions
BMP is best for Simple uncompressed images in Windows applications, while Sigma RAW is best for Professional photography with Sigma cameras using Foveon sensor. Both are image formats but they differ in compression, compatibility, and intended use cases.
It depends on your use case. BMP is better for Simple uncompressed images in Windows applications. Sigma RAW is better for Professional photography with Sigma cameras using Foveon sensor. Consider your specific requirements when choosing between them.
Direct conversion from BMP to Sigma RAW is not currently available on ChangeThisFile. You may need to use an intermediate format.
Yes. ChangeThisFile supports Sigma RAW to BMP conversion. Upload your file for server-side conversion — files are auto-deleted after processing.
File size depends on the content and compression settings. BMP preserves full quality. Sigma RAW preserves full quality. For the smallest files, choose the format with lossy compression that meets your quality needs.
No, BMP does not support hdr, whereas Sigma RAW does. This may be an important factor depending on your use case.
Both BMP and Sigma RAW are supported file formats that are free to use. You can convert between them for free on ChangeThisFile — server-side conversions are free with no signup required.
Sigma RAW is newer — it was introduced in 2002, while BMP dates back to 1986. Newer formats often offer better compression and features, but older formats tend to have wider compatibility.
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