raw format

What is a .IIQ file?

IIQ is Phase One's raw format from its high-end medium-format backs, prized for enormous resolution and dynamic range.

Full name
Phase One Raw
Developed by
Phase One
Released
2008
Extension
.iiq
MIME type
image/iiq
Transparency
No

How to open a IIQ file

IIQ opens in Capture One (its native editor) and Lightroom; convert to DNG/TIFF for other tools.

What IIQ files are used for

Professional photography

Maximum dynamic range and editing latitude.

Color grading

Recover highlights and shadows non-destructively.

Archival masters

Keep the untouched original alongside exports.

Strengths & limitations

✔ Strengths✖ Limitations
Maximum editing latitudeNo transparency support
Limited support — may need converting
Needs raw-capable software

Need more than a conversion?

Remove the background from IIQ images, upscale to 4K, or generate new visuals with SharkFoto AI.

Frequently asked questions

IIQ is Phase One's raw format from its high-end medium-format backs, prized for enormous resolution and dynamic range.

IIQ opens in Capture One (its native editor) and Lightroom; convert to DNG/TIFF for other tools.

IIQ is an unprocessed raw container, so no detail is discarded.

Use SharkFoto's free tools — upload your IIQ file and convert it to a more convenient format in seconds. It's free, processed securely and never stored.

No — IIQ doesn't store transparency; convert to PNG or WEBP if you need it.