ERF files are generated by the Epson R-D1 and R-D1s digital rangefinder cameras. 


# MIME Type

image/x-epson-erf 


# Organisation

Epson ERF files are TIFF/EP files. CFA data is in the _primary_ subIFD from IFD0. Thumbnail is 8RGB in IFD0.  Exif is attached to the ExifIFD of IFD0. 


# Compression

The CFA image data is "compressed", bit packed. The _Compression_ value in the CFA subIFD is set to 32769.