The Silicon Imaging (SI-2K) was a 2K digital video camera built on a single 16 mm sized CMOS sensor manufactured by Altasens. It was able to record direct to disk in the compressed cineform RAW format and was notable for its tiny detachable camera head, which can be positioned up to 100m from the recording unit through an ethernet cable. Danny Boyle and his director of photography Anthony Dod Mantle used the camera on the films Slumdog Millionaire (Academy Award for Best Cinematography) and 127 Hours. The head and the recording unit together cost (c.a. 2011) $23,000. The head by itself costs $13,750 and could be used to record to a laptop that had appropriate specifications and software.