Bayer basic raw conversion of DSLR raw format is available on the Automatic Image Set Processing and Digital Camera Raw Conversion image set operations. Bayer basic raw data has no white balance and scale applied and is used for read noise and gain calculations and also precise dark, flat, and bias calibration. For an example of using Bayer basic raw data to remove dark band defects from a set of DSLR images see DSLR Canon 20D Type Dark River Removal Processing