Capture One supports a range of still-image formats and is compatible with QuickTime Player/Windows Media Player (macOS/Windows) for playback of supported movie formats and codecs. The following file types can be imported:
RAW (from a range of supported digital cameras)
DNG* (from a range of supported digital cameras)
JPEG
TIFF**
PNG
PSD
PSB
AF (Affinity Photo)
8-bit HEIF/HEIC
QuickTime/Windows Media Player (macOS/Windows) compatible movies and codecs (depending on OS)
NOTE:
*DNG files are supported in Capture One Pro but not in Capture One for Fujifilm / (for Sony) / for Nikon.
**TIFF files editing is not supported in Capture One for Phase One.
PSB format Support
A PSB file (Photoshop Big) is Adobe Photoshop's large document format, created for files that exceed the size limitations of the standard PSD format—specifically those larger than 2 GB.
Capture One supports PSB file import and export starting from version 16.7.0, with the same feature set available for PSDs.
See more here: PSB format support
HEIF/HEIC format support
HEIF (High Efficiency Image Format) and HEIC (High Efficiency Image Container) use modern compression to reduce file size while preserving quality. Many Apple devices and some newer cameras save photos in this format.
Capture One supports HEIF/HEIC file import starting with version 21 (14.0.0). Supported files include Apple HEIC and 8-bit HEIF images. 10-bit HEIF/HEIC files that are generated by new cameras are not supported at the moment.
See more here: HEIF/HEIC file format
Affinity Photo (.af)
Affinity Photo (.af) is Serif’s native file format, designed to store image data along with layers, adjustments, masks, and other non-destructive edits.
Capture One supports .af file import and export starting from version 16.7.7, enabling a round-trip workflow with Affinity Photo. Imported files are rendered as flattened images, while export preserves image data, color profiles, metadata, and masks as alpha channels. This feature is currently available on macOS with Apple Silicon only.
See more here: Affinity Photo (.af) file support in Capture One