Long necks and Fuji RAWs.
Various resources on demosaicing and algorithms:
- Thoughts on Demosaicing for X-Trans Sensors
- X-Trans vs Bayer: Fantastic Claims and How to Test Them
- Demosaicing
- Demosaicking of xtrans images
- xtrans_interpolate.c, based on dcraw.c (uses Markesteijn demosaic)