Sony's DVCAM is a professional variant of the DV standard that uses the same cassettes as DV and Mini-DV, but transports the tape 50% faster. All DVCAM recorders and cameras can play back DV material, but DVCPRO support was only recently added to some models like DSR-1800,DSR-2000,DSR-1600. DVCAM tapes (or DV tapes recorded in DVCAM mode) have their recording time reduced by one third.