What is a .COS file?
COS stores Capture One edit settings for a raw photo. Created by Capture One.
- Did you know
- Capture One is a professional raw editor favoured in studio and fashion photography.
- The COS is the file that actually carries every adjustment you make to a raw in Capture One, since the original is never altered.
- In a session Capture One rewrites the COS with each tweak, whereas a catalog stores the same settings in its database instead.
- What Analyser reads
- Identify camera RAW edit sidecars - Apple Photos adjustments (AAE), RawTherapee (PP3), Capture One (COS), DxO PhotoLab (DOP) and Nikon NX Studio (NKSC) - reading the applied-edit recipe, plus cinema and rare camera RAW: REDCODE (R3D), Blackmagic (BRAW), Canon Cinema RAW Light (CRM), ARRIRAW (ARI), Phantom CINE and FLIR thermal (FPF).
- Depth of analysis
- .COS is an identification-grade format: Analyser recognises it from its bytes and decodes the header metadata it carries, rather than opening it in a full viewer. Formats that do get a full viewer are marked "Full" on the formats page.
- Open a .COS file
- Drag a .COS file onto the Analyser home page (or tap to pick one). It is identified entirely in your browser - nothing is uploaded, there is no account, and it works offline once installed.