Convert anything, at global scale.
200+ formats and automation APIs that feels instant.
CONVERT
From
To
Drop files or choose a source
Upload multiple files at once, mix formats, and fine-tune every conversion with format-aware settings.
Max 2GB per file · Drag & drop ready · Mixed file types welcome
IMAGE
X3F Converter
Convert X3F files with ConverterHQ using workflows tuned for image compatibility, predictable output, and practical downstream use.
Quality and compatibility profile
Core technical and historical facts used for conversion quality, compatibility decisions, and SEO uniqueness.
| Feature | Fact sheet |
|---|---|
| Category | IMAGE |
| Extensions | .x3f |
| MIME types | image/x3f |
| Created | 2002 |
| Inventor | Sigma (Foveon) |
| Status | proprietary |
| Compression type | lossless |
| Animation support | ❌ |
| Transparency support | ❌ |
| Supports Quality | ❌ |
| Supports Lossless | ✅ |
| Supports Metadata | ❌ |
| Supports Multiple Frames | ❌ |
| Color Depth | 24-bit |
| Container | X3F container |
| Camera raw data | ✅ |
| Manufacturer | Sigma |
| Foveon Sensor | ✅ |
| Layer support | ❌ |
| Vector scaling | ❌ |
| Reflowable text | ❌ |
| Multitrack content | ❌ |
| HDR content | ❌ |
| Structured data | ❌ |
| Streaming delivery | ❌ |
About this format
X3F format context
Format: X3F
Overview
X3F matters because Sigma's Foveon-based raw workflows have a distinctive technical and enthusiast identity, which keeps X3F relevant even though it is a niche raw family in the broader camera market.
Photography workflows needed a way to preserve sensor data and capture metadata before white balance, sharpening, tonal rendering, or lossy compression choices became permanent.
X3F is mainly a niche enthusiast and specialist raw format that still matters in compatibility and archive conversion when Foveon-origin images need new downstream outputs.
X3F is closely associated with Sigma.
X3F is usually selected for workflows that center on capture ingest, editing, web or print delivery.
Typical Workflows
- capture ingest
- editing
- web or print delivery
Common Software
- vendor photo software
- Adobe Camera Raw
- LibRaw-based workflows
Strengths
- Preserve capture-stage sensor information.
- Support deeper photo-editing and archival workflows than flattened delivery images.
- Retain metadata and workflow latitude that rendered outputs usually discard.
Limitations
- Compatibility often depends on vendor or decoder support.
- They are source formats, not publication-ready outputs.
- Public technical documentation is uneven across manufacturers.
Related Formats
- DNG
- JPG
- TIFF
- PNG
Interesting Context
Sigma raw support is closely tied to the company's Foveon sensor story, giving X3F a reputation and workflow profile that differ from more mainstream Bayer-centric raw ecosystems.
X3F belongs to Sigma capture, Foveon-oriented photo processing, and archives that preserve original Sigma camera files.
It is mainly relevant in specialist photographic communities and raw-conversion tools that support Sigma formats.
Status: proprietary. Introduced: 2002. Invented by: Sigma (Foveon). Stewarded by: Sigma.
How X3F fits into workflows
Workflow role: X3F
Convert to X3F when preserving Sigma camera originals or maintaining a workflow built around Foveon raw processing.
It is useful for archival retention and non-destructive editing of Sigma captures.
History of X3F
Format history: X3F
Sigma raw support is closely tied to the company's Foveon sensor story, giving X3F a reputation and workflow profile that differ from more mainstream Bayer-centric raw ecosystems.
Original problem: Photography workflows needed a way to preserve sensor data and capture metadata before white balance, sharpening, tonal rendering, or lossy compression choices became permanent.
Why X3F still matters
Current role: X3F
X3F matters because Sigma's Foveon-based raw workflows have a distinctive technical and enthusiast identity, which keeps X3F relevant even though it is a niche raw family in the broader camera market.
Modern role: X3F is mainly a niche enthusiast and specialist raw format that still matters in compatibility and archive conversion when Foveon-origin images need new downstream outputs.
When to use X3F
- capture ingest
- editing
- web or print delivery
Advantages of X3F
- Preserve capture-stage sensor information.
- Support deeper photo-editing and archival workflows than flattened delivery images.
- Retain metadata and workflow latitude that rendered outputs usually discard.
Limitations of X3F
- Compatibility often depends on vendor or decoder support.
- They are source formats, not publication-ready outputs.
- Public technical documentation is uneven across manufacturers.
Formats related to X3F
X3F technical profile
| Feature | Fact sheet |
|---|---|
| Category | image |
| Extensions | .x3f |
| MIME types | image/x3f |
| Created year | 2002 |
| Inventor | Sigma (Foveon) |
| Status | proprietary |
| supports_animation | False |
| supports_transparency | False |
| supports_quality | False |
| supports_lossless | True |
| supports_metadata | False |
| supports_multiple_frames | False |
| compression_type | lossless |
| color_depth | 24-bit |
| container | X3F container |
| camera_raw | True |
| manufacturer | Sigma |
| foveon_sensor | True |
| supports_layers | False |
| supports_vector_scaling | False |
| supports_reflowable_text | False |
| supports_multitrack | False |
| hdr_capable | False |
| structured_data_capable | False |
| streaming_ready | False |
| sources | {'url': 'https://www.sigma-global.com/en/support/software/sigma-x3f-plug-in-for-photoshop/', 'title': 'vendor-specific camera raw family', 'relevance': 'Official specification', 'source_type': 'official'}, {'url': 'https://www.libraw.org/about', 'title': 'Reference Documentation', 'relevance': 'Technical reference', 'source_type': 'reference'}, {'url': 'https://www.libraw.org/supported-cameras', 'title': 'Reference Documentation', 'relevance': 'Technical reference', 'source_type': 'reference'} |
X3F quality and compatibility
Format profile: X3F
Size profile: large. Quality profile: raw. Editability profile: high. Compatibility profile: limited. Archival profile: strong. Metadata profile: rich. Delivery profile: limited. Workflow profile: source. Status: proprietary.
Notable capabilities: camera raw data.
Software that opens X3F
- vendor photo software
- Adobe Camera Raw
- LibRaw-based workflows
Conversion options
FAQs
Q: What is X3F typically used for?
A:
X3F is commonly used for capture ingest, editing, web or print delivery.
Q: What are the advantages of X3F?
A:
X3F is broadly compatible across common software.
Q: What should I watch out for when converting X3F?
A:
Check output quality and compatibility on representative sample files.
Sources
Official specification
Technical reference
Technical reference