The Seattle FilmWorks file format is used for images created by Seattle FilmWorks Inc., a Film Processing company located in Seattle, WA.
The default extension for Seattle FilmWorks files is SFW.
Supporting Platforms and Applications
Seattle FilmWorks' PhotoWorks software on Microsoft Windows and Apple MacIntosh platforms.
PMView reads Seattle FilmWorks files using modified JPEG data (SFW94a). The older undocumented SFW93a format is not supported.