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IMAGE
IIQ Converter
Convert IIQ 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 | .iiq |
| MIME types | image/iiq |
| Created | 2007 |
| Inventor | Phase One |
| Status | proprietary |
| Compression type | lossless |
| Animation support | ❌ |
| Transparency support | ❌ |
| Supports Quality | ❌ |
| Supports Lossless | ✅ |
| Supports Metadata | ❌ |
| Supports Multiple Frames | ❌ |
| Color Depth | 24-bit |
| Container | IIQ container |
| Camera raw data | ✅ |
| Manufacturer | Phase One |
| Layer support | ❌ |
| Vector scaling | ❌ |
| Reflowable text | ❌ |
| Multitrack content | ❌ |
| HDR content | ❌ |
| Structured data | ❌ |
| Streaming delivery | ❌ |
About this format
IIQ format context
Format: IIQ
Overview
IIQ matters because Phase One's medium-format imaging ecosystem targets top-end commercial, studio, and technical photography where raw quality, tethered workflows, and image fidelity matter more than mass-market portability.
Photography workflows needed a way to preserve sensor data and capture metadata before white balance, sharpening, tonal rendering, or lossy compression choices became permanent.
IIQ remains a specialist raw family in medium-format studio, commercial, and archive workflows before export into retouching or delivery formats.
IIQ is closely associated with Phase One.
IIQ 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
Phase One positioned IIQ around its medium-format and digital-back workflows, which is why IIQ appears in a very different professional context from ordinary consumer camera raws.
IIQ belongs to Phase One capture systems, Capture One workflows, tethered studio photography, and high-end retouching environments that depend on large-sensor raw originals.
It is deeply tied to commercial capture pipelines.
Status: proprietary. Introduced: 2007. Invented by: Phase One. Stewarded by: Phase One.
How IIQ fits into workflows
Workflow role: IIQ
Convert to IIQ when preserving Phase One originals or keeping compatibility with medium-format studio workflows built around Capture One and Phase One hardware.
It is an archival and editing format for premium photographic production.
History of IIQ
Format history: IIQ
Phase One positioned IIQ around its medium-format and digital-back workflows, which is why IIQ appears in a very different professional context from ordinary consumer camera raws.
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 IIQ still matters
Current role: IIQ
IIQ matters because Phase One's medium-format imaging ecosystem targets top-end commercial, studio, and technical photography where raw quality, tethered workflows, and image fidelity matter more than mass-market portability.
Modern role: IIQ remains a specialist raw family in medium-format studio, commercial, and archive workflows before export into retouching or delivery formats.
When to use IIQ
- capture ingest
- editing
- web or print delivery
Advantages of IIQ
- 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 IIQ
- 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 IIQ
IIQ technical profile
| Feature | Fact sheet |
|---|---|
| Category | image |
| Extensions | .iiq |
| MIME types | image/iiq |
| Created year | 2007 |
| Inventor | Phase One |
| 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 | IIQ container |
| camera_raw | True |
| manufacturer | Phase One |
| 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.phaseone.com/imaging-quality-performance/intelligent-image-quality-iiq/', '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'} |
IIQ quality and compatibility
Format profile: IIQ
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 IIQ
- vendor photo software
- Adobe Camera Raw
- LibRaw-based workflows
Conversion options
FAQs
Q: What is IIQ typically used for?
A:
IIQ is commonly used for capture ingest, editing, web or print delivery.
Q: What are the advantages of IIQ?
A:
IIQ is broadly compatible across common software.
Q: What should I watch out for when converting IIQ?
A:
Check output quality and compatibility on representative sample files.
Sources
Official specification
Technical reference
Technical reference